APA (7th ed.) Citation

Pratchett, T. (2009). Unseen academicals: A novel of Discworld (First edition.). Harper.

Chicago Style (17th ed.) Citation

Pratchett, Terry. Unseen Academicals: A Novel of Discworld. First edition. New York: Harper, 2009.

MLA (8th ed.) Citation

Pratchett, Terry. Unseen Academicals: A Novel of Discworld. First edition. Harper, 2009.

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