APA (7th ed.) Citation

Twain, M., & Fried, M. B. (1970). Mark Twain on the art of writing. Folcroft Press.

Chicago Style (17th ed.) Citation

Twain, Mark, and Martin B. Fried. Mark Twain on the Art of Writing. [Folcroft, Pa.]: Folcroft Press, 1970.

MLA (9th ed.) Citation

Twain, Mark, and Martin B. Fried. Mark Twain on the Art of Writing. Folcroft Press, 1970.