Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

Getis, Arthur, et al. Introduction to Geography. 11th ed. McGraw-Hill Higher Education, 2008.