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Your first place to go for geology topic research.

Geological Society of America (GSA) Citation Style

GSA Reference Guidelines and Examples (PDF)


Allmendinger, R.W., Cardozo, N., and Fisher, D., 2011, Structural Geology Algorithms: Vectors and Tensors in Structural Geology: New York, Cambridge University Press, 304 p

Journal Article

Arias, O., and Denyer, P., 1991, Estructura geológica de la región comprendida en las hojas topográficas Abras, Caraigres, Candelaria y Río Grande, Costa Rica: Revista Geológica de América Central, no. 12, p. 61–74. 


Bayley, R.W., and Muehlberger, W.R., compilers, 1968, Basement rock map of the United States, exclusive of Alaska and Hawaii: U.S. Geological Survey, scale 1:2,500,000, 2 sheets. 


MARGINS, 1999, The Seismogenic Zone Experiment (SEIZE): Science plan: html (accessed July 2001).