APA Citatie

Getis, A., Getis, J., & Fellmann, J. D. (2008). Introduction to geography (11th ed.). Boston: McGraw-Hill Higher Education.

Chicago Style citaat

Getis, Arthur, Judith Getis, and Jerome D. Fellmann. Introduction to Geography. 11th ed. Boston: McGraw-Hill Higher Education, 2008.

MLA citatie

Getis, Arthur, Judith Getis, and Jerome D. Fellmann. Introduction to Geography. 11th ed. Boston: McGraw-Hill Higher Education, 2008.