APA (7th ed.) Citation

Key, T., & Bunyan, J. (2009). The pilgrim's progress. Dramatic Publishing.

Chicago Style (17th ed.) Citation

Key, Tom, and John Bunyan. The Pilgrim's Progress. Woodstck, Ill.: Dramatic Publishing, 2009.

MLA (9th ed.) Citation

Key, Tom, and John Bunyan. The Pilgrim's Progress. Dramatic Publishing, 2009.