Hess, E. H. (1973). Imprinting: Early experience and the developmental psychobiology of attachment. Van Nostrand Reinhold.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHess, Eckhard Heinrich. Imprinting: Early Experience and the Developmental Psychobiology of Attachment. New York, USA: Van Nostrand Reinhold, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHess, Eckhard Heinrich. Imprinting: Early Experience and the Developmental Psychobiology of Attachment. Van Nostrand Reinhold, 1973.
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