APA (7th ed.) Citation

Twain, M. (1966). The innocents abroad or the new pilgrims progress. New American Library.

Chicago Style (17th ed.) Citation

Twain, Mark. The Innocents Abroad or the New Pilgrims Progress. New York: New American Library, 1966.

MLA (9th ed.) Citation

Twain, Mark. The Innocents Abroad or the New Pilgrims Progress. New American Library, 1966.