Peg Hall. (2002). "Whose Nose Is This?: A Look at Beaks, Snouts, and Trunks (Whose Is It?)". Picture Window Books.
芝加哥风格引文Peg Hall. "Whose Nose Is This?: A Look at Beaks, Snouts, and Trunks (Whose Is It?)". Picture Window Books, 2002.
MLA引文Peg Hall. "Whose Nose Is This?: A Look at Beaks, Snouts, and Trunks (Whose Is It?)". Picture Window Books, 2002.
警告：这些引文格式不一定是100％准确.