APA (7th ed.) Citation

READ. (1980). Beginner's guide to gemmology. Butterworth.

Chicago Style (17th ed.) Citation

READ. Beginner's Guide to Gemmology. London: Butterworth, 1980.

MLA (8th ed.) Citation

READ. Beginner's Guide to Gemmology. Butterworth, 1980.

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