APA (7th ed.) Citation

Clark, R. O. (1969). World place location: A self study manual. John Wiley.

Chicago Style (17th ed.) Citation

Clark, Robert O. World Place Location: A Self Study Manual. New York: John Wiley, 1969.

MLA (9th ed.) Citation

Clark, Robert O. World Place Location: A Self Study Manual. John Wiley, 1969.