APA (7th ed.) Citation

Sinkankas, J. (1959). Gemstones of North America. Van Nostrand.

Chicago Style (17th ed.) Citation

Sinkankas, John. Gemstones of North America. Princeton, N.J.: Van Nostrand, 1959.

MLA (9th ed.) Citation

Sinkankas, John. Gemstones of North America. Van Nostrand, 1959.