APA (7th ed.) Citation

Matlins, A. L., & Bonanno, A. C. (1989). Gem identification made easy : a hands-on guide to more confident buying & selling / Antoinette L. Matlins & A.C. Bonanno: A hands-on guide to more confident buying & selling. Gemstone Press ; Distributed by Van Nostrand Reinhold.

Chicago Style (17th ed.) Citation

Matlins, Antoinette Leonard, and Antonio C. Bonanno. Gem Identification Made Easy : A Hands-on Guide to More Confident Buying & Selling / Antoinette L. Matlins & A.C. Bonanno: A Hands-on Guide to More Confident Buying & Selling. South Woodstock, Vt. : New York, N.Y.: Gemstone Press ; Distributed by Van Nostrand Reinhold, 1989.

MLA (9th ed.) Citation

Matlins, Antoinette Leonard, and Antonio C. Bonanno. Gem Identification Made Easy : A Hands-on Guide to More Confident Buying & Selling / Antoinette L. Matlins & A.C. Bonanno: A Hands-on Guide to More Confident Buying & Selling. Gemstone Press ; Distributed by Van Nostrand Reinhold, 1989.

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