Collins, J. P., & Crump, M. L. (2009). Extinction in our times: Global amphibian decline. Oxford University Press.
芝加哥风格引文Collins, James P., 与 Martha L. Crump. Extinction in Our Times: Global Amphibian Decline. Oxford ; New York: Oxford University Press, 2009.
MLA引文Collins, James P., 与 Martha L. Crump. Extinction in Our Times: Global Amphibian Decline. Oxford University Press, 2009.
警告：这些引文格式不一定是100％准确.