ebrary, Inc, & Vries, M. d. (2010). Protecting marine mammals. Nova Science.
芝加哥风格引文ebrary, Inc, 与 Marielle de Vries. Protecting Marine Mammals. New York: Nova Science, 2010.
MLA引文ebrary, Inc, 与 Marielle de Vries. Protecting Marine Mammals. Nova Science, 2010.
警告：这些引文格式不一定是100％准确.