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Getis, Arthur, Getis, Judith, Bjelland, Mark, Fellmann, Jerome D.. (2011). Introduction to geography (13th ed.). New York: McGraw Hill.

Gaya Chicago

Getis, Arthur, Getis, Judith, Bjelland, Mark, Fellmann, Jerome D.. Introduction to geography. 13th ed. New York: McGraw Hill, 2011. Text.

Gaya MLA

Getis, Arthur, Getis, Judith, Bjelland, Mark, Fellmann, Jerome D.. Introduction to geography. 13th ed. New York: McGraw Hill, 2011. Text.

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Getis, Arthur, Getis, Judith, Bjelland, Mark, Fellmann, Jerome D.. Introduction to geography. 13th ed. New York: McGraw Hill, 2011. Print.