Heinz Hartmann, Ego Psychology and the Problem of Adaptation (New York: International Universities Press, 1939): 71.

Центры по контролю и профилактике заболеваний, «Adverse Childhood Experiences Reported by Adults — Five States, 2009», Morbidity and Mortality Weekly Report 59, no. 49 (2010): 1609–1613, ; похожие, но другие определения приводятся в Maxia Dong et al., «The Interrelatedness of Multiple Forms of Childhood Abuse, Neglect, and Household Dysfunction», Child Abuse and Neglect 28, no. 7 (2004): 771–784; Vincent J. Felitti et al., «Relationship of Childhood Abuse and Household Dysfunction to Many of the Leading Causes of Death in Adults: The Adverse Childhood Experiences (ACE) Study», American Journal of Preventive Medicine 14, no. 4 (1998): 245–258; Jennifer S. Middlebrooks and Natalie PG. Audage, «The Effects of Childhood Stress on Health Across the Lifespan», Centers for Disease Control and Prevention, National Center for Injury Prevention and Control, по состоянию на September 1, 2016, .