APA Citatie

Getis, A., Fellmann, J. D., & Getis, J. (2004). Introduction to geography (9th ed.). Boston: McGraw-Hill Higher Education.

Chicago Style citaat

Getis, Arthur, Jerome Donald Fellmann, en Judith Getis. Introduction to Geography. 9th ed. Boston: McGraw-Hill Higher Education, 2004.

MLA citatie

Getis, Arthur, Jerome Donald Fellmann, en Judith Getis. Introduction to Geography. 9th ed. Boston: McGraw-Hill Higher Education, 2004.