APA引文

Kaplan, J. (1966). Mr. Clemens and mark Twain. Penguin Books.

Chicago Edition Citation

Kaplan, Justin. Mr. Clemens and Mark Twain. Harmondsworth: Penguin Books, 1966.

MLA引文

Kaplan, Justin. Mr. Clemens and Mark Twain. Penguin Books, 1966.

警告：這些引文格式不一定是100％准確.