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Reference Style Checklist
Please help us keep journal costs down by submitting your references in AAPG format. The following checklist will help you format your references.
Text Citations
- All references cited in the manuscript are listed in the References Cited.
- Names, spellings, and dates between the text and the References Cited are consistent.
- Unpublished references are cited as personal communications (C. J. Rockfall, 1998, personal communication) and are not listed in References Cited.
- Initials are used when referencing two or more authors who have the same last name.
(W. F. Brooks, 1995; L. N. Brooks, 1995). - Articles or books that have two authors or editors are cited with both authors’ names (Baker and Jones, 2001).
- Articles or books that have three or more authors or editors are cited with the senior author’s name plus "et al." (Baker et al., 1995).
- Works are cited chronologically first, then alphabetically (Harvey et al., 1989, 1992; Smithers, 1990, Zink et al., 1990, 2000; Jordan et al., 1993; Abercrombie, 1994, Fernandez, 2001).
- A page number is given when a direct quote is used (Smith, 1991, p. 1492).
References Cited List
- References are complete and accurate.
- Works accepted for publication are cited as "in press;" year is not given. (Jones, R. B., in press, Fluvial and lacustrine rocks . . . p. 91 - 121_.
- For works that list one author, two authors, or a group of authors that have more than one publication in one year, differentiation is made by adding a, b, c, etc., after the year (1991a).
Order of Cited Information
Use the following order of information within a reference.
Journal Article: author name(s), year of publication, title of article, name of journal, volume number, issue number (optional), page numbers.
Example:
Carstens, H., 1978, Origin of abnormal formation pressures in central North Sea Lower Tertiary clastics: The Log Analyst, v. 129, no. 1, p. 24 - 28.
Book Article: author name(s), year of publication, title of article, editor(s) of book, title of book, city of publication, publisher, series and any number, volume number, page range.
Example:
Posamentier, H. W., and P. R. Vail, 1988, Eustatic controls on clastic deposition II–sequence and systems tract models, in C. K. Wilgus, B. S. Hastings C. G. St. C. Kendall, H. W. Posamentier, C. A. Ross, and J. C. Van Wagoner, eds., Sea-level changes: an integrated approach: SEPM Special Publication 42, p. 125 - 154.
Book: author or editor name(s), year of publication, title of book, city of publication, publisher, number of pages.
Example:
Riley, J. P., and R. Chester, 1971, Introduction to marine chemistry: New York, Academic Press, 465 p.
Map: author name(s), year of publication, title of work, city of publication, publisher, series and any number, scale, number of sheets.
Example:
Harris, A. G., L. D. Harris, and J. B. Epstein, 1978, Oil and gas data from Paleozoic rocks in the Appalachian basin: U.S. Geological Survey Miscellaneous Investigations Map I-917-E, scale 1:2,500,000, 4 sheets.
Thesis: author name(s), year of publication, title of work, name of the degree, university, city of location, number of pages for thesis.
Example:
" . . . Master’s thesis, Rice University, Houston, Texas, 200 p."
Internet: author name(s), year of publication or last revision (if known), title of document, title of complete work (if applicable), URL in angle brackets, date of access.
Example:
Rocky, I. M., 1998, Oil patch, <http://www.geology@oilpatch.edu/article.html> Accessed January 5, 1998.
Format
- Leave a space between two initials of an author’s name.
- List senior author’s last name first, followed by initials; thereafter, list initials then author's last name (Walter, L. M., A. M. Stueber, and T. J. Huston).
- Spell out all journal names except AAPG and SEPM.
- Repeat all author or editor names; do not use em dashes in place of names.
- List all authors or editors unless the work has more than 10, then list first author or editor plus "et al."
- Use the initial word cap/lower case for titles of papers and books.
- Designate an abstract with "(abs.)" after the title of the abstract.
Order of References Cited
- One author: order works alphabetically. If the author has more than one work, order by date, oldest to youngest.
- Two authors: list works alphabetically. If two authors have more than one work, order by date, oldest to youngest.
- Three or more authors: order by date, oldest first.