(untitled) - Bowlby, J.
Attachment and loss: VoL 1. Attachment New York: Basic https://www.simplypsychology.org/bowlby.html BooksKennell et al. Evidence for a sensitive period in the human mother. Ciba Found Symp, 1975; 87-101 [Bowlby, J. (1969). Attachment and loss: VoL 1. New York: Basic] 1969; (VoL 1. Attachment).Carfoot et al., 2004