APA (7th ed.) Citation

Williams, R. S., Jr, & Ferrigno, J. G. (1998). Glaciers of South America. U.S. G.P.O. ; For sale by the U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Williams, Richard S., Jr, and Jane G. Ferrigno. Glaciers of South America. Washington : Denver, CO: U.S. G.P.O. ; For sale by the U.S. Geological Survey, 1998.

MLA (9th ed.) Citation

Williams, Richard S., Jr, and Jane G. Ferrigno. Glaciers of South America. U.S. G.P.O. ; For sale by the U.S. Geological Survey, 1998.