APA-viite

Coelho, P., & Costa, M. J. (2007). The witch of Portobello: A novel. HarperCollinsPublishers.

Chicago-tyylinen lähdeviittaus

Coelho, Paulo, ja Margaret Jull Costa. The Witch of Portobello: A Novel. New York: HarperCollinsPublishers, 2007.

MLA-viite

Coelho, Paulo, ja Margaret Jull Costa. The Witch of Portobello: A Novel. HarperCollinsPublishers, 2007.