MLA

Sokal, Robert Reuven, and F. James Rohlf. Biometry : the Principles and Practice of Statistics In Biological Research. 4th ed. New York (N.Y.): Freeman, 2011.

APA

Sokal, R. Reuven, & Rohlf, F. James. (2011). Biometry : the principles and practice of statistics in biological research. 4th ed. New York (N.Y.): Freeman.

Chicago

Sokal, Robert Reuven, and F. James Rohlf. Biometry: The Principles and Practice of Statistics In Biological Research. 4th ed. New York (N.Y.): Freeman, 2011.