Cita APA (7a ed.)
Willis, F. R. (1977). Western civilization: An urban perspective (2nd.ed.). D.C.Heath and Co..
Cita Chicago Style (17a ed.)
Willis, F. Roy. Western Civilization: An Urban Perspective. 2nd.ed. Lexington Massachusetts: D.C.Heath and Co., 1977.
Cita MLA (9a ed.)
Willis, F. Roy. Western Civilization: An Urban Perspective. 2nd.ed. D.C.Heath and Co., 1977.
Precaución: Estas citas no son 100% exactas.