APA (7th ed.) Citation

Bunyan, J. (1987). The pilgrim's progress. Penguin Books.

Chicago Style (17th ed.) Citation

Bunyan, John. The Pilgrim's Progress. Londres: Penguin Books, 1987.

MLA (9th ed.) Citation

Bunyan, John. The Pilgrim's Progress. Penguin Books, 1987.

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