APA (7th ed.) Citation

Osborne, M. P., Homer, & Howell, T. (2004). The final battle. Hyperion Books For Children.

Chicago Style (17th ed.) Citation

Osborne, Mary Pope, Homer, and Troy Howell. The Final Battle. New York: Hyperion Books For Children, 2004.

MLA (8th ed.) Citation

Osborne, Mary Pope, et al. The Final Battle. Hyperion Books For Children, 2004.

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