APA استشهاد

Nachtigall, W. (1974). Biological mechanisms of attachment. Springer Verlag.

استشهاد بنمط شيكاغو

Nachtigall, W. Biological Mechanisms of Attachment. New York: Springer Verlag, 1974.

MLA استشهاد

Nachtigall, W. Biological Mechanisms of Attachment. Springer Verlag, 1974.