APA (7th ed.) Citation

Zucker, B. (1976). How to invest in gems: Everyone's guide to buying rubies, sapphires, emeralds, and diamonds. Quadrangle/New York Times Book Co..

Chicago Style (17th ed.) Citation

Zucker, Benjamin. How to Invest in Gems: Everyone's Guide to Buying Rubies, Sapphires, Emeralds, and Diamonds. New York: Quadrangle/New York Times Book Co., 1976.

MLA (9th ed.) Citation

Zucker, Benjamin. How to Invest in Gems: Everyone's Guide to Buying Rubies, Sapphires, Emeralds, and Diamonds. Quadrangle/New York Times Book Co., 1976.