Isaac, N. B. (2015). Sheep ahoy!. IN Animal person [column]. Animal Scene.
芝加哥风格引文Isaac, Norman B. "Sheep Ahoy!. IN Animal Person [column]." Animal Scene 2015.
MLA引文Isaac, Norman B. "Sheep Ahoy!. IN Animal Person [column]." Animal Scene, 2015.
警告：这些引文格式不一定是100％准确.