1. ICNND (1957) Manual for Nutrition Surveys, Interdepartmental Committee on Nutrition for National Defense, National Institute of Health, Bethesda.
2. ICNND (1963) Manual for Nutrition Surveys, 2nd edn, Interdepartmental Committee on Nutrition for National Defense, National Institute of Health, Bethesda.
3. Sebrell, W.H. and Harris, R.S. (eds) (1971) The Vitamins. Chemistry, Physiology, Pathology, Methods, Academic Press, New York.
4. Sauberlich, H.E., Dowdy, R.P. and Skala, J.H. (eds) (1974) Laboratory Tests for the Assessment of Nutritional Status, CRC Press, Cleveland (Ohio).
5. Brubacher, G.B. (1982) Are biochemical indicators available which reflect the intake of vitamins?, in The Diet Factor in Epidemiological Research, (eds J.G.A.J. Hautvast and W. Klaver), EURO-NUT rep. 1, Wageningen, pp. 125–35.