1. Ball, H. R., Jr., G. W. Froning, G. J. Mountney, E. C. Naber and A. P. Stemberger, 1974. A scientist speaks about eggs. Technical Report. American Egg Board, Park Ridge, IL 60068.
2. Factors affecting the yield of egg products from shell eggs;Cotterill;Proc. World's Poultry Congress,1962
3. Egg composition as influenced by breeding, egg size, age and season;Marion;Poultry Sci.,1964