APA (7th ed.) Citation

English, P. R., Smith, W. J., & MacLean, A. (1982). The sow: Improving her efficiency (2nd ed.). Farming Press.

Chicago Style (17th ed.) Citation

English, Peter R., William J. Smith, and Alastair MacLean. The Sow: Improving Her Efficiency. 2nd ed. Ipswich: Farming Press, 1982.

MLA (9th ed.) Citation

English, Peter R., et al. The Sow: Improving Her Efficiency. 2nd ed. Farming Press, 1982.