Kooyman, G. L., & Lynch, W. (2013). Penguins: The animal answer guide. The Johns Hopkins University Press.
芝加哥风格引文Kooyman, Gerald L., 与 Wayne Lynch. Penguins: The Animal Answer Guide. Baltimore: The Johns Hopkins University Press, 2013.
MLA引文Kooyman, Gerald L., 与 Wayne Lynch. Penguins: The Animal Answer Guide. The Johns Hopkins University Press, 2013.
警告：这些引文格式不一定是100％准确.