APA (7th ed.) Citation

Williams, W. L., & Roberts, S. J. (1943). Veterinary obstetrics (Fourth edition.). Ethel Williams Plimpton.

Chicago Style (17th ed.) Citation

Williams, W. L., and Stephen J. Roberts. Veterinary Obstetrics. Fourth edition. Worcester, Mass.: Ethel Williams Plimpton, 1943.

MLA (9th ed.) Citation

Williams, W. L., and Stephen J. Roberts. Veterinary Obstetrics. Fourth edition. Ethel Williams Plimpton, 1943.

Warning: These citations may not always be 100% accurate.