- J.A.M. Publications: Polygraph Textbooks - www.jampublications.com
- EUROPEAN POLYGAPH, Journal of Andrzej Frycz Modrzewski, Krakow University - www.polygraph.pl Email: margerita.krasnowolska@kte.pl
- Evaluation of Polygraph Charts: Formats, Criteria and Scoring. Authors: Tuvia Shurany and Israel Ravid (2004). - Click here to order the book
- SEAK, Inc. Medical and Legal Information Systems - www.seak.com
- TheLawyerPages.com - www.thelawyerpages.com
- Backster School of Lie Detection - www.backster.net
- Virginia School of Polygraph - www.virginiaschoolofpolygraph.com
- Academy for Scientific Investigative Training - www.polygraph-training.com
- Daniel Mangan, M.A. - Polygraph Examiner - www.polygraphman.com
- Lafayette Instrument Company - www.lafayetteinstrument.com
- Limestone Technologies, Inc. - www.limestonetech.com
- The Stoelting Company - www.stoeltingco.com
- Spy Outlet - www.spyoutlet.com
- Primary Perception - www.primaryperception.com
- Australian Lie Detection Services - www.privateinvestigatoraustralia.com
- HNS Polygraph Services, 3200 Belmont Avenue, Suite 3, Youngstown, OH 44505 - www.hnspolygraph.net