APA (7th ed.) Citation

O'Connor, P. R., & Crompton, S. (1981). Grimtooth's traps: A game-master's aid for all role-playing systems ([First edition].). Flying Buffalo Inc..

Chicago Style (17th ed.) Citation

O'Connor, Paul Ryan, and Steve Crompton. Grimtooth's Traps: A Game-master's Aid for All Role-playing Systems. [First edition]. Scottsdale, Arizona: Flying Buffalo Inc., 1981.

MLA (9th ed.) Citation

O'Connor, Paul Ryan, and Steve Crompton. Grimtooth's Traps: A Game-master's Aid for All Role-playing Systems. [First edition]. Flying Buffalo Inc., 1981.