Vicedo, Marga (2014). „Attachment”. Encyclopedia of Critical Psychology. стр. 136—141. ISBN978-1-4614-5582-0. doi:10.1007/978-1-4614-5583-7_22. „In its original sense, attachment refers to the mother-infant bond that, according to John Bowlby, has a biological instinctual basis. Today, the term is also used to refer to the affectional bonds established in other relationships”
Colin Murray Parkes, J. S. Hinde, Peter Marris (1991). Attachment across the life cycle. London: Routledge. ISBN0-203-13247-5. OCLC67770156.CS1 одржавање: Вишеструка имена: списак аутора (веза)