APA Citation

Liddicoat, R. T. (1993). Handbook of gem identification (12th ed.). Los Angeles: Gemological Institute of America.

Chicago Style Citation

Liddicoat, Richard T. Handbook of Gem Identification. 12th ed. Los Angeles: Gemological Institute of America, 1993.

MLA Citation

Liddicoat, Richard T. Handbook of Gem Identification. 12th ed. Los Angeles: Gemological Institute of America, 1993.

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