1. Association of Official Agricultural Chemists, 1940. Official and tentative methods of analysis. 5th ed., Washington, D.C.
2. A collaborative study of the A.O.A.C. chick method of assay for vitamin D;Baird;Jour. A.O.A.C,1941
3. Use of toes rather than tibiae in the A.O.A.C. chick method of vitamin D determination;Baird;Jour. A.O.A.C.,1942
4. A curative method for the assay of vitamin D with chicks;Carver;Poultry Sci.,1939