Ewing, W. R. (1951). Poultry nutrition: For the use of feed manufacturers, feed dealers, feed salesmen and service men, veterinarians, hatchery men, breeders, and poultrymen. A text and reference book for instructors, students, and all persons interested in poultry feeds and feeding (4th ed. (rev.).). W.R. Ewing.
Chicago Style (17th ed.) CitationEwing, W. Ray. Poultry Nutrition: For the Use of Feed Manufacturers, Feed Dealers, Feed Salesmen and Service Men, Veterinarians, Hatchery Men, Breeders, and Poultrymen. A Text and Reference Book for Instructors, Students, and All Persons Interested in Poultry Feeds and Feeding. 4th ed. (rev.). South Pasadena, Calif.: W.R. Ewing, 1951.
MLA (9th ed.) CitationEwing, W. Ray. Poultry Nutrition: For the Use of Feed Manufacturers, Feed Dealers, Feed Salesmen and Service Men, Veterinarians, Hatchery Men, Breeders, and Poultrymen. A Text and Reference Book for Instructors, Students, and All Persons Interested in Poultry Feeds and Feeding. 4th ed. (rev.). W.R. Ewing, 1951.