APA (7th ed.) Citation

Anderson, B. W. (1980). Gem testing (9th ed.). Butterworths.

Chicago Style (17th ed.) Citation

Anderson, Basil William. Gem Testing. 9th ed. London: Butterworths, 1980.

MLA (9th ed.) Citation

Anderson, Basil William. Gem Testing. 9th ed. Butterworths, 1980.