APA

Lehner P. N., . (1996). Handbook of ethological methods. New York: Cambridge University Press.

Chicago

Lehner Philip N, . 1996. Handbook of ethological methods. New York: Cambridge University Press.

Harvard

Lehner P. N., . (1996). Handbook of ethological methods. New York: Cambridge University Press.

MLA

Lehner Philip N, . Handbook of ethological methods. New York: Cambridge University Press. 1996.