APA引文

Leroux, G. (2010). The phantom of the opera. Project Gutenberg.

Chicago Style (17th ed.) Citation

Leroux, Gaston. The Phantom of the Opera. To be supplied: Project Gutenberg, 2010.

MLA引文

Leroux, Gaston. The Phantom of the Opera. Project Gutenberg, 2010.

警告：這些引文格式不一定是100％准確.