APA (7th ed.) Citation

Gregory, R. W., Card, D. G., Kempster, H. L., & Doyle, L. P. (1938). Poultry problems in production, marketing, and management. J.B. Lippincott Company.

Chicago Style (17th ed.) Citation

Gregory, R. W., Dana George Card, H. L. Kempster, and Leo Philip Doyle. Poultry Problems in Production, Marketing, and Management. Chicago, Philadelphia [etc.]: J.B. Lippincott Company, 1938.

MLA (9th ed.) Citation

Gregory, R. W., et al. Poultry Problems in Production, Marketing, and Management. J.B. Lippincott Company, 1938.