Cita APA

Palen, J. J. (1992). The urban world (4th ed.). McGraw - Hill.

Citación estilo Chicago

Palen, John J. The Urban World. 4th ed. New York: McGraw - Hill, 1992.

Cita MLA

Palen, John J. The Urban World. 4th ed. McGraw - Hill, 1992.