Kaufman, D. G., & Franz, C. M. (1993). Biosphere 2000: Protecting our global environment. HarperCollins College Publishers.
芝加哥风格引文Kaufman, Donald G., 与 Cecilia M. Franz. Biosphere 2000: Protecting Our Global Environment. New York: HarperCollins College Publishers, 1993.
MLA引文Kaufman, Donald G., 与 Cecilia M. Franz. Biosphere 2000: Protecting Our Global Environment. HarperCollins College Publishers, 1993.
警告:这些引文格式不一定是100%准确.