APA (7th ed.) Citation

Carella, C. J., Jackson, S., & Schichtel, T. (1997). GURPS Voodoo. Pegasus Press.

Chicago Style (17th ed.) Citation

Carella, C. J., Steve Jackson, and Thomas Schichtel. GURPS Voodoo. [Friedberg]: Pegasus Press, 1997.

MLA (9th ed.) Citation

Carella, C. J., et al. GURPS Voodoo. Pegasus Press, 1997.