APA (7th ed.) Citation

Anthony, P., Nye, J. L., Hamilton, T. C., & Clouse, J. (1989). Piers Anthony's visual guide to Xanth. Avon Books.

Chicago Style (17th ed.) Citation

Anthony, Piers, Jody Lynn Nye, Todd Cameron Hamilton, and James Clouse. Piers Anthony's Visual Guide to Xanth. New York: Avon Books, 1989.

MLA (8th ed.) Citation

Anthony, Piers, et al. Piers Anthony's Visual Guide to Xanth. Avon Books, 1989.