APA (7th ed.) Citation

Lewis, M. G. (1998). The monk: A romance. Penguin Books.

Chicago Style (17th ed.) Citation

Lewis, Matthew G. The Monk: A Romance. London [u.a.]: Penguin Books, 1998.

MLA (9th ed.) Citation

Lewis, Matthew G. The Monk: A Romance. Penguin Books, 1998.

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