Cita APA

Getis, A., Bjelland, M. D., & Getis, V. (2014). Introduction to geography (14. ed.). New York: Mc Graw Hill.

Citación estilo Chicago

Getis, Arthur, Mark D. Bjelland, y Victoria Getis. Introduction to Geography. 14. ed. New York: Mc Graw Hill, 2014.

Cita MLA

Getis, Arthur, Mark D. Bjelland, y Victoria Getis. Introduction to Geography. 14. ed. New York: Mc Graw Hill, 2014.