APA

Butler P. J., Brown J. A., Stephenson D. G. & Speakman J. R. (2021). Animal physiology. New York: Oxford University Press.

Chicago

Butler Patric J, Brown J Anne, Stephenson D George and Speakman John R. 2021. Animal physiology. New York: Oxford University Press.

Harvard

Butler P. J., Brown J. A., Stephenson D. G. and Speakman J. R. (2021). Animal physiology. New York: Oxford University Press.

MLA

Butler Patric J, Brown J Anne, Stephenson D George and Speakman John R. Animal physiology. New York: Oxford University Press. 2021.