Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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