1. The Purina Eastern Broiler Letter;Anonymous,1952
2. Effect of environment on growth and feed and water consumption of chickens;Barott;IV. The effect of light on early growth. J. Nutrition,1951
3. Diseases of Poultry. 3rd Ed.;Biester,1952
4. Cannibalism in poultry;Clark;West Virginia Agr. Exp. Sta. Cir.,1953
5. Influence of various lighting regimes on the performance of growing chickens;Shutze;Washington Agr. Exp. Sta. Tech. Bul.,1960