^Bergman, Jerry (1999). Jehovah's Witnesses : a comprehensive and selectively annotated bibliography (1. publ ed.). Westport, Connecticut: Greenwood Press. ISBN9780313305108.
^Chryssides, George D. (2009). The A to Z of Jehovah's Witnesses. Lanham, Md.: Scarecrow Press. pp. 145–168. ISBN9780810868915.
^Gruss, Edmond C. (2001). "Selected bibliography". Jehovah's Witnesses : their claims, doctrinal changes, and prophetic speculation : what does the record show?. Fairfax, VA: Xulon Press. p. 357. ISBN9781931232302.