APA (7e ed.) Bronvermelding

Getis, A. a. (2006). Introduction to geography (10th ed.). McGraw - Hill.

Chicago (17e ed.) Bronvermelding

Getis, Arthur...[et al]. Introduction to Geography. 10th ed. Boston: McGraw - Hill, 2006.

MLA (9e ed.) Bronvermelding

Getis, Arthur...[et al]. Introduction to Geography. 10th ed. McGraw - Hill, 2006.