APA (7th ed.) Citation

Bunyan, J. (1964). The pilgrim's progress. A Signet Classic.

Chicago Style (17th ed.) Citation

Bunyan, John. The Pilgrim's Progress. New York, New York: A Signet Classic, 1964.

MLA (9th ed.) Citation

Bunyan, John. The Pilgrim's Progress. A Signet Classic, 1964.