APA引文

Portis, A. (2009). A penguin story. HarperCollins.

Chicago Style (17th ed.) Citation

Portis, Antoinette. A Penguin Story. New York: HarperCollins, 2009.

MLA引文

Portis, Antoinette. A Penguin Story. HarperCollins, 2009.

警告：這些引文格式不一定是100％准確.