Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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