APA (7th ed.) Citation

Van Gumster, J., & Shimonski, R. (2010). GIMP bible. Wiley. https://doi.org/10.1002/9781118256015

Chicago Style (17th ed.) Citation

Van Gumster, Jason, and Robert Shimonski. GIMP Bible. Indianapolis, IN: Wiley, 2010. https://doi.org/10.1002/9781118256015.

MLA (9th ed.) Citation

Van Gumster, Jason, and Robert Shimonski. GIMP Bible. Wiley, 2010. https://doi.org/10.1002/9781118256015.