Cunningham, C., & Berger, J. (1997). Horn of darkness: Rhinos on the edge. Oxford University Press.
芝加哥风格引文Cunningham, Carol, 与 Joel Berger. Horn of Darkness: Rhinos on the Edge. New York: Oxford University Press, 1997.
MLA引文Cunningham, Carol, 与 Joel Berger. Horn of Darkness: Rhinos on the Edge. Oxford University Press, 1997.
警告：这些引文格式不一定是100％准确.