Hess, E. H. (1973). Imprinting: Early experience and the developmental psychobiology of attachment. Van Nostrand Reinhold.
Chicago-referens (17:e uppl.)Hess, Eckhard Heinrich. Imprinting: Early Experience and the Developmental Psychobiology of Attachment. New York, USA: Van Nostrand Reinhold, 1973.
MLA-referens (9:e uppl.)Hess, Eckhard Heinrich. Imprinting: Early Experience and the Developmental Psychobiology of Attachment. Van Nostrand Reinhold, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.