Cita APA (7th ed.)

Willis,. (1981). Western civilization: An urban perspective (3rd ed.). D.C. Heath.

Cita Chicago (17th ed.)

Willis. Western Civilization: An Urban Perspective. 3rd ed. Lexington: D.C. Heath, 1981.

Cita MLA (9th ed.)

Willis. Western Civilization: An Urban Perspective. 3rd ed. D.C. Heath, 1981.