APA Citation

Foshag, W. F., & Foshag, W. F. Gems and gem mineral.

Chicago Style Citation

Foshag, William F., and William F. Foshag. Gems and Gem Mineral.

MLA Citation

Foshag, William F., and William F. Foshag. Gems and Gem Mineral.

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