Παραπομπή APA

Keeling, T. M., & Walters, W. R. A. (1960). Geography (7 th ed.). Donnington Press.

Παραπομπή Chicago Style

Keeling, T M., και W R A. Walters. Geography. 7 th ed. St. Alban's: Donnington Press, 1960.

Παραπομπή MLA

Keeling, T M., και W R A. Walters. Geography. 7 th ed. Donnington Press, 1960.