Gaya APA

Christopherson, Robert W., Corey, Paul. (1992). Geosystems An introduction To Physical Geography . New York: Macmillan Publishing.

Gaya Chicago

Christopherson, Robert W., Corey, Paul. Geosystems An introduction To Physical Geography. New York: Macmillan Publishing, 1992. Text.

Gaya MLA

Christopherson, Robert W., Corey, Paul. Geosystems An introduction To Physical Geography. New York: Macmillan Publishing, 1992. Text.

Gaya Turabian

Christopherson, Robert W., Corey, Paul. Geosystems An introduction To Physical Geography. New York: Macmillan Publishing, 1992. Print.