APA (7th ed.) Zitazioa

Roepke, H. G. (1967). Readings in economic geography. John Wiley.

Chicago Style (17th ed.) Zitazioa

Roepke, Howerd G. Readings in Economic Geography. New York: John Wiley, 1967.

MLA (9th ed.) Zitazioa

Roepke, Howerd G. Readings in Economic Geography. John Wiley, 1967.