The Bielefeld interdisciplinary project & Immelmann, K. (1981). Behavioral development: The Bielefeld Interdisciplinary project. Cambridge University Press.
Cita Chicago (17th ed.)The Bielefeld interdisciplinary project i Klaus Immelmann. Behavioral Development: The Bielefeld Interdisciplinary Project. New York: Cambridge University Press, 1981.
Cita MLA (9th ed.)The Bielefeld interdisciplinary project i Klaus Immelmann. Behavioral Development: The Bielefeld Interdisciplinary Project. Cambridge University Press, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.