Urban, Hugh B. (June 2006). "Fair Game: Secrecy, Security, and the Church of Scientology in Cold War America". Journal of the American Academy of Religion. Oxford University Press. 74 (2): 356–389. doi:10.1093/jaarel/lfj084. ISSN1477-4585.CS1 maint: ref=harv (link)
Urban, Hugh B. (June 2006). "Fair Game: Secrecy, Security, and the Church of Scientology in Cold War America". Journal of the American Academy of Religion. Oxford University Press. 74 (2): 356–389. doi:10.1093/jaarel/lfj084. ISSN1477-4585.CS1 maint: ref=harv (link)