APA (7th ed.) Citation

Miller, S., Miller, B. W., Lambard, S., Taylor, T. L., Jackson, S., & Norton, A. (1989). GURPS Witch World: A generic universal roleplaying system worldbook based on Andre Norton's Witch World books. Steve Jackson Games.

Chicago Style (17th ed.) Citation

Miller, Sasha, Ben W. Miller, Sharleen Lambard, Toni L. Taylor, Steve Jackson, and Andre Norton. GURPS Witch World: A Generic Universal Roleplaying System Worldbook Based on Andre Norton's Witch World Books. [Austin, Texas]: Steve Jackson Games, 1989.

MLA (9th ed.) Citation

Miller, Sasha, et al. GURPS Witch World: A Generic Universal Roleplaying System Worldbook Based on Andre Norton's Witch World Books. Steve Jackson Games, 1989.