Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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