1. Horvath F.S. (2019), Chicago: Birthplace of Modern Polygraphy, European Polygraph, 13,2 (48), 70–71.
2. Krapohl D., Handler M. & Sturm S. (2012), Terminology Reference for the Science of Psychophysiological Detection of Deception, APA, p. 38.
3. Matte J.E. (1996), Forensic Psychophysiology using the Polygraph, J.A.M. Publications, Williamsville, NY. p. 41.
4. Summers W.G. (1939), Science can get the confession, Fordham Law Review, 8, 335–354.
5. Turrou L.G. (1938), Nazi Spies in America, Random House, New York.