APA (7th ed.) Citation

Anderson, B. W. (1948). Gem testing ([4th ed. and 1st American ed.].). Emerson Books.

Chicago Style (17th ed.) Citation

Anderson, B. W. Gem Testing. [4th ed. and 1st American ed.]. New York: Emerson Books, 1948.

MLA (9th ed.) Citation

Anderson, B. W. Gem Testing. [4th ed. and 1st American ed.]. Emerson Books, 1948.