APA (7th ed.) Citation

Pratchett, T. (2014). Hogfather: A novel of Discworld®. Harper.

Chicago Style (17th ed.) Citation

Pratchett, Terry. Hogfather: A Novel of Discworld®. New York: Harper, 2014.

MLA (9th ed.) Citation

Pratchett, Terry. Hogfather: A Novel of Discworld®. Harper, 2014.