APA (7th ed.) Zitazioa

TREWARTHA, G. T. (1967). Elements of Geography. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

TREWARTHA, Glenn T. Elements of Geography. New York: McGraw-Hill, 1967.

MLA (9th ed.) Zitazioa

TREWARTHA, Glenn T. Elements of Geography. McGraw-Hill, 1967.