Cita APA

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

Citación estilo Chicago

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

Cita MLA

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