APA

Getis A., Getis J. & Fellmann J. D. (2004). Introduction to Geography. Boston: McGraw-Hill / Higher Education.

Chicago

Getis Arthur, Getis J and Fellmann J D. 2004. Introduction to Geography. Boston: McGraw-Hill / Higher Education.

Harvard

Getis A., Getis J. and Fellmann J. D. (2004). Introduction to Geography. Boston: McGraw-Hill / Higher Education.

MLA

Getis Arthur, Getis J and Fellmann J D. Introduction to Geography. Boston: McGraw-Hill / Higher Education. 2004.