APA (7th ed.) Citation

Beckwith, J. A. (1987). Gem minerals of Idaho. Caxton Printers.

Chicago Style (17th ed.) Citation

Beckwith, John A. Gem Minerals of Idaho. Caldwell, Idaho: Caxton Printers, 1987.

MLA (8th ed.) Citation

Beckwith, John A. Gem Minerals of Idaho. Caxton Printers, 1987.

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