1. Association of Official Agricultural Chemists, 1984. Analysis of the Association of Official Agricultural Chemists, Washington, DC.
2. The calcium and phosphorus requirement of White Leghorn pullets from 8–21 weeks;Berg;Poultry Sci.,1964
3. Multiple range and multiple F tests;Duncan;Biometrics,1955
4. Amino acid specifications for replacement pullet feeds;Harms;Feedstuffs,1981
5. Nutrient Requirements of Poultry,1977