Cita APA (7a ed.)

Polk, P. (2016). Collecting rocks, gems and minerals: Identification, values, lapidary uses (3rd edition.). Krause Publications, a division of F+W Media, Inc..

Cita Chicago Style (17a ed.)

Polk, Patti. Collecting Rocks, Gems and Minerals: Identification, Values, Lapidary Uses. 3rd edition. Iola, WI: Krause Publications, a division of F+W Media, Inc., 2016.

Cita MLA (8a ed.)

Polk, Patti. Collecting Rocks, Gems and Minerals: Identification, Values, Lapidary Uses. 3rd edition. Krause Publications, a division of F+W Media, Inc., 2016.

Precaución: Estas citas no son 100% exactas.