APA引文

(2005). McDougal Littell life science. McDougal, Littell.

Chicago Style (17th ed.) Citation

McDougal Littell Life Science. Evanston, Ill: McDougal, Littell, 2005.

MLA引文

McDougal Littell Life Science. McDougal, Littell, 2005.

警告：這些引文格式不一定是100％准確.