Cita APA

Boegel, H., & John, S. Collector's guide to minerals and gemstones.

Citación estilo Chicago

Boegel, Hellmuth, and Sinkankas John. Collector's Guide to Minerals and Gemstones.

Cita MLA

Boegel, Hellmuth, and Sinkankas John. Collector's Guide to Minerals and Gemstones.

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