Jennings, H. S. (1930). The biological basis of human nature. W.W. Norton & Company, inc.
Lua i Stíl Chicago (17ú heag.)Jennings, H. S. The Biological Basis of Human Nature. New York: W.W. Norton & Company, inc, 1930.
Lua MLA (8ú heag.)Jennings, H. S. The Biological Basis of Human Nature. W.W. Norton & Company, inc, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.