Gaya APA

Hofer, M, A. (1981). The Roots of Human Behavior: an introduction to the psychobiology of early development . San Francisco: W. H. Freeman and Company.

Gaya MLA

Hofer, Myron, A.. "The Roots of Human Behavior: an introduction to the psychobiology of early development". San Francisco: W. H. Freeman and Company, 1981. Text.