1. Agriculture Handbook No. 456;CF Adams,1975
2. Aloia, J. F., Cohn, S. H., Ostuni, J. A., Cane, R., & Ellis, K. (1976). Prevention of involutional bone loss by exercise. Annals of International Medicine, 89, 356–358.
3. Aloia, J. R., Rasulo, P., Deftos, L. J., Kaswain, A., & Yen, J. K. (1985). Exercise-induced hypercalcemia and the calciotropic hormones. Journal of Laboratory and Clinical Medicine, 106, 229–232.
4. Baker, H., Frank, O., Thind, I. S., Jaslow, S. P., & Louria, D. B. (1979). Vitamin profiles in elderly persons living at home or in nursing homes versus profiles in healthy young subjects. Journal of American Geriatrics Society, 27, 444–450.
5. DHEW Publication No. SRS 73–20236;WD Bechill,1973