APA

Immelmann K., Beer C., . (1989). <A >dictionary of ethology. Cambridge: Havard University Press.

Chicago

Immelmann Klaus, Beer Colin, . 1989. <A >dictionary of ethology. Cambridge: Havard University Press.

Harvard

Immelmann K., Beer C., . (1989). <A >dictionary of ethology. Cambridge: Havard University Press.

MLA

Immelmann Klaus, Beer Colin, . <A >dictionary of ethology. Cambridge: Havard University Press. 1989.