Huntington, E., Cushing, S. W., & Shaw, E. B. (1964). Principles of human geography (6th ed.). New York: Wiley.
Παραπομπή Chicago StyleHuntington, Ellsworth, Summer W. Cushing, and Earl B. Shaw. Principles of Human Geography. 6th ed. New York: Wiley, 1964.
Παραπομπή MLAHuntington, Ellsworth, Summer W. Cushing, and Earl B. Shaw. Principles of Human Geography. 6th ed. New York: Wiley, 1964.
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