1. Latent Culture: A Note on the Theory of Latent Social Roles
2. Boocock, S.S. (1968) "From luxury item to learning tool: an overview of the theoretical literature on games," pp. 52-64 in S. S. Boocock and E. O. Schild (eds.) Simulation Games in Learning. Beverly Hills, CA: Sage.
3. Carr, M. (1978) "Foreword," p. 2 in E. Gary Gygax, Advanced Dungeons & Dragons Players Handbook. Lake Geneva, WI: TSR Hobbies.