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