Getis, A., Getis, J., & Fellmann, J. D. (2009). Introduction to geography (12th ed.). McGraw-Hill.
Citación estilo ChicagoGetis, Arthur, Judith Getis, and Jerome D. Fellmann. Introduction to Geography. 12th ed. Dubuque, IA: McGraw-Hill, 2009.
Cita MLAGetis, Arthur, et al. Introduction to Geography. 12th ed. McGraw-Hill, 2009.
Warning: These citations may not always be 100% accurate.