Gaya APA

Getis, J, D, F, A, G, ;, J. (2007). Human geography : landscapes of human activities / 9th ed. (9). New York: McGraw-Hill.

Gaya MLA

Getis, Jerome, D., Fellman;, Arthur, Getis, ;, Judith. "Human geography : landscapes of human activities / 9th ed.". 9 New York: McGraw-Hill, 2007. Text.