Spratt, R. A., & Santat, D. (2012). Nanny Piggins and the wicked plan (1st U.S. ed.). Little, Brown.
芝加哥风格引文Spratt, R. A., 与 Dan Santat. Nanny Piggins and the Wicked Plan. 1st U.S. ed. New York: Little, Brown, 2012.
MLA引文Spratt, R. A., 与 Dan Santat. Nanny Piggins and the Wicked Plan. 1st U.S. ed. Little, Brown, 2012.
警告：这些引文格式不一定是100％准确.