APA(7版)引用形式

Pearcy, G. E., & Fitfield, R. H. (1957). World political geography (2nd ed.). Crowell.

Chicagoスタイル(17版)引用形式

Pearcy, George Etzel, , Russell Hunt Fitfield. World Political Geography. 2nd ed. New York: Crowell, 1957.

MLA(9版)引用形式

Pearcy, George Etzel, , Russell Hunt Fitfield. World Political Geography. 2nd ed. Crowell, 1957.