APA (7th ed.) Citation

Barry, D., Pearson, R., & Call, G. (2009). Peter and the sword of mercy / 4. Disney/Hyperion Books.

Chicago Style (17th ed.) Citation

Barry, Dave, Ridley Pearson, and Greg Call. Peter and the Sword of Mercy / 4. New York: Disney/Hyperion Books, 2009.

MLA (8th ed.) Citation

Barry, Dave, et al. Peter and the Sword of Mercy / 4. Disney/Hyperion Books, 2009.

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