1. Official Methods of Analysis;A.O.A.C.,1980
2. The Nutrient Requirements of Ruminant Livestock;Agricultural Research Council,1980
3. New Concepts of cattle growth;Berg,1976
4. Nitrogen utilisation and the requirement for maintenance of Malaysian swamp buffaloes;Devendra;MARDI Res. Bull.,1984
5. Nitrogen utilisation and the requirements for maintenance of Kedah-Kelantan cattle;Devendra;MARDI Res. Bull.,1984