APA (7th ed.) Citation

Pough, F. H., & Peterson, R. T. (1991). Peterson first guide to rocks and minerals. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Pough, Frederick H., and Roger Tory Peterson. Peterson First Guide to Rocks and Minerals. Boston: Houghton Mifflin, 1991.

MLA (8th ed.) Citation

Pough, Frederick H., and Roger Tory Peterson. Peterson First Guide to Rocks and Minerals. Houghton Mifflin, 1991.

Warning: These citations may not always be 100% accurate.