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Oceanography Research Guide

American Geophysical Union (AGU)

In-Text Citations

References are cited by the last name of the author(s) (use et al. for three or more authors) and the year:

[Smith, 1991; Smith and Allen, 1992; Smith et al., 1993].

If the author's name is part of the sentence, only the year is bracketed: Jones [1990]. 

Two or more publications by the same author in the same year are distinguished by a, b, and c after the year: [Smith, 1989a, 1989b].

For detailed rules consult the style guide through the links provided in the top left box.

Reference Lists

Article in Journal

Budetta, G., and D. Carbone (1998), Temporal variations in gravity at Mt. Etna (Italy) associated with the 1989 and 1991 eruptions, Bull. Volcanol., 59, 311–326.


Scholz, C. H., and T. C. Hanks (2004), The strength of the San Andreas fault: A discussion, in Rheology and Deformation of the Lithosphere at Continental Margins, edited by G. D. Karner et al., Columbia Univ. Press, New York, in press.


Schiarizza, P., R. G. Gaba, J. K. Glover, J. I. Garver, and P. J. Umhoefer (1997), Geology and mineral occurrences of the Taseko-Bridge River area, Bull. 100, 291 pp., B. C. Minist. of Employ. and Invest., Energy and Miner. Div., Geol. Surv. Branch, Vancouver, B. C., Canada.

Data Sets

Hall, D. K., G. A. Riggs, and V. V. Salomonson (2000), MODIS/Terra Snow Cover 5-Min L2 Swath 500m, Version 4, October 2007 to April 2008,, Natl. Snow and Ice Data Cent., Boulder, Colo. (Updated daily.)


For detailed rules and additional examples consult the style guide through the links provided in the top left box.

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