APA (7th ed.) Citation

Crocker, D. W., & Barr, D. W. (1968). Handbook of the Crayfishes of Ontario. Univ. of Toronto Press.

Chicago Style (17th ed.) Citation

Crocker, Denton W., and David W. Barr. Handbook of the Crayfishes of Ontario. [Toronto]: Univ. of Toronto Press, 1968.

MLA (9th ed.) Citation

Crocker, Denton W., and David W. Barr. Handbook of the Crayfishes of Ontario. Univ. of Toronto Press, 1968.