1. J. F. Brosschot (1985 ). Ontkenning en hoge bloeddruk (Denial and high blood pressure). Unpublished diploma thesis . Department of Clinical Psychology and Health, University of Utrecht.
2. C. Cooper (1982 ). An experimental study of Freudian defence mechanisms . Unpublished doctoral thesis . Exeter: Department of Psychology, University of Exeter.
3. An evaluation of the Defence Mechanism Test