APA (7th ed.) Citation

Rockwell, S., Ross, S., & Pratchett, T. (2008). The Discworld graphic novels / [based on the stories by] Terry Pratchett. Doubleday.

Chicago Style (17th ed.) Citation

Rockwell, Scott, Steven Ross, and Terry Pratchett. The Discworld Graphic Novels / [based on the Stories by] Terry Pratchett. London: Doubleday, 2008.

MLA (9th ed.) Citation

Rockwell, Scott, et al. The Discworld Graphic Novels / [based on the Stories by] Terry Pratchett. Doubleday, 2008.

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