Cita APA (7a ed.)

Palen, J. J. (1975). The urban world. McGraw-Hill.

Cita Chicago Style (17a ed.)

Palen, John J. The Urban World. New York: McGraw-Hill, 1975.

Cita MLA (9a ed.)

Palen, John J. The Urban World. McGraw-Hill, 1975.