Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

Precaución: Estas citas no son 100% exactas.