Allen, J. L. (1996). Environment 96/97. (15th ed.). Dushkin Publishing Group.
芝加哥风格引文Allen, John L. Environment 96/97. 15th ed. Connecticut: Dushkin Publishing Group, 1996.
MLA引文Allen, John L. Environment 96/97. 15th ed. Dushkin Publishing Group, 1996.
警告：这些引文格式不一定是100％准确.