Schafer, John R. Advanced interviewing techniques, c2003: CIP t.p. (John R. Schafer, M.A., FBI special agent, National Security Division, Behavioral Analysis Program)

Phone call from J. Navarro, June 19, 2003 (John R. Schafer, b. 04-25-54)

The like switch, 2015: ECIP t.p. (Jack Schafer); Simon & Schuster WWW site, viewed May 18, 2016 (cover: Jack Schafer, Ph. D.; p. 4 of cover: John R. "Jack" Schafer, Ph. D.; psychologist, professor, intelligence consultant, and former FBI special agent; spent fifteen years conducting counterintelligence and counterterrorism investigations, and seven years as a behavioral analyst for the FBI's National Security Division's Behavioral Analysis Program)

Communication with publisher, August 6, 2019 (Schafer prefers AAP to be "Schafer, Jack, 1954-" rather than "Schafer, John R., 1954-"