Vigor, P. (1971). Books on communism and the communist countries. London: Ampersand.
芝加哥风格引文Vigor, P.H. Books on Communism and the Communist Countries. London: Ampersand, 1971.
MLA引文Vigor, P.H. Books on Communism and the Communist Countries. London: Ampersand, 1971.
警告：这些引文格式不一定是100％准确.