APA (7e ed.) Bronvermelding

Palen, J. J. (1981). The urban world (2nd ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Palen, J. John. The Urban World. 2nd ed. New York: McGraw-Hill, 1981.

MLA (9e ed.) Bronvermelding

Palen, J. John. The Urban World. 2nd ed. McGraw-Hill, 1981.