APA (7th ed.) Citation

Simpson, B. (1968). Geological maps ([1st ed.].). Pergamon Press.

Chicago Style (17th ed.) Citation

Simpson, Brian. Geological Maps. [1st ed.]. Oxford ; New York: Pergamon Press, 1968.

MLA (8th ed.) Citation

Simpson, Brian. Geological Maps. [1st ed.]. Pergamon Press, 1968.