Willis, F. R. (1977). Western civilization: An urban perspective (2nd.ed.). D.C.Heath and Co..
芝加哥风格引文Willis, F. Roy. Western Civilization: An Urban Perspective. 2nd.ed. Lexington: D.C.Heath and Co., 1977.
MLA引文Willis, F. Roy. Western Civilization: An Urban Perspective. 2nd.ed. D.C.Heath and Co., 1977.
警告:这些引文格式不一定是100%准确.