Getis, A., Getis, J., & Fellmann, J. D. (2008). Introduction to geography (11th ed.). Boston: McGraw-Hill Higher Education.
Παραπομπή Chicago StyleGetis, Arthur, Judith Getis, and Jerome D. Fellmann. Introduction to Geography. 11th ed. Boston: McGraw-Hill Higher Education, 2008.
Παραπομπή MLAGetis, Arthur, Judith Getis, and Jerome D. Fellmann. Introduction to Geography. 11th ed. Boston: McGraw-Hill Higher Education, 2008.
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