Cita APA (7th ed.)

Short, J. R. (1993). An introduction to political geography (2nd ed.). Routledge.

Cita Chicago (17th ed.)

Short, John R. An Introduction to Political Geography. 2nd ed. London ; New York: Routledge, 1993.

Cita MLA (9th ed.)

Short, John R. An Introduction to Political Geography. 2nd ed. Routledge, 1993.