APA (7th ed.) Citation

Twain, M. (1924). Mark Twain's Autobiography. Harper.

Chicago Style (17th ed.) Citation

Twain, Mark. Mark Twain's Autobiography. New York [u.a.]: Harper, 1924.

MLA (8th ed.) Citation

Twain, Mark. Mark Twain's Autobiography. Harper, 1924.

Warning: These citations may not always be 100% accurate.