APA引文

Christie, A. (2010). Secret adversary. Project Gutenberg.

Chicago Style (17th ed.) Citation

Christie, Agatha. Secret Adversary. To be supplied: Project Gutenberg, 2010.

MLA引文

Christie, Agatha. Secret Adversary. Project Gutenberg, 2010.

警告：這些引文格式不一定是100％准確.