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Marshall, P.J.; Fox, N.A. (2005). "Relationship between behavioral reactivity at 4 months and attachment classification at 14 months in a selected sample". Infant Behavior and Development. 28 (4): 492–502. doi:10.1016/j.infbeh.2005.06.002.
Van Ijzendoorn MH, Bakermans-Kranenburg MJ (2006). "DRD4 7-repeat polymorphism moderates the association between maternal unresolved loss or trauma and infant disorganization". Attach Hum Dev. 8 (4): 291–307. doi:10.1080/14616730601048159. PMID17178609. S2CID27646011.
Dozier M, Stovall KC, Albus KE, Bates B (2001). "Attachment for infants in foster care: the role of caregiver state of mind". Child Dev. 72 (5): 1467–77. doi:10.1111/1467-8624.00360. PMID11699682.
Van Ijzendoorn MH, Bakermans-Kranenburg MJ (2006). "DRD4 7-repeat polymorphism moderates the association between maternal unresolved loss or trauma and infant disorganization". Attach Hum Dev. 8 (4): 291–307. doi:10.1080/14616730601048159. PMID17178609. S2CID27646011.