Gaya APA

Sokal, R, R., Rohlf, F, J. (1981). Biometry : the principles and practice of statistics in biological research (2nd.ed.). New York: W.H.Freeman.

Gaya MLA

Sokal, Robert, R.., Rohlf, F., James. "Biometry : the principles and practice of statistics in biological research". 2nd.ed. New York: W.H.Freeman, 1981. Text.