@book{ BB28523094, author = "Ainsworth, Mary D. Salter and Waters, Everett", title = "Patterns of attachment : a psychological study of the strange situation", publisher = "Psychology Press : Routledge", year = "2015", edition = "Classic ed", series = "Psychology press classic editions", number = "", URL = "https://ci.nii.ac.jp/ncid/BB28523094" }