Key, V. O. (1958). Politics, parties, and pressure groups (4th ed.). Crowell.
芝加哥风格引文Key, V. O. Politics, Parties, and Pressure Groups. 4th ed. New York: Crowell, 1958.
MLA引文Key, V. O. Politics, Parties, and Pressure Groups. 4th ed. Crowell, 1958.
警告：这些引文格式不一定是100％准确.