Fox, M. Where is the green sheep? Houghton Mifflin Harcourt, [2009], c2004.
芝加哥风格引文Fox, Mem. Where Is the Green Sheep? Boston, Mass.: Houghton Mifflin Harcourt, [2009], c2004.
MLA引文Fox, Mem. Where Is the Green Sheep? Houghton Mifflin Harcourt, [2009], c2004.
警告：这些引文格式不一定是100％准确.