Arieti, S. (1974) Interpretation of Schizophrenia (2nd ed.) New York: Basis Books, 423–429.
Beiser, M., Ravel, J. L., Collomb, H. & Egelhoff, C. (1972) Assessing psychiatric disorder among the Serer of Senegal. Journal of Nervous and Mental Disorders, 154, 141–151.
Bicknell, D. J. (1975) Pica: A childhood symptom. London: Butterworths.
Bott, E., Denton, D. A., Goding, J. K. & Sabine, J. R. (1964) Sodium deficiency and corticosteroid secretion in cattle. Nature, 202, 461–463.
Burchfield, S. R., Euch, M. S. & Woods, S. C. (1977) Geophagia in response to stress and arthritis. Physiology & Behavior, 19, 265–267.
Catzel, P. (1963) Pica and milk intake. Pediatrics, 31, 1056.
Cavdar, A. E., Arcasey, A. & Cin, S. (1974) Pica with zinc deficiency. Lancet, ii, 761.
Cohen, D. J., Johnson, W. T. & Caparulo, B. K. (1976) Pica and elevated blood lead level in autistic and atypical children. American Journal of Diseases in Childhood, 130, 47–48.
Comments (1975) The problem of pica. Medical Journal of Australia, 541–542.
Committee on Toxicology. Assembly of life sciences. National Research Council (1976) Recommendations for the prevention of lead poisoning in children. Nutrition Review, 34, 321–327.
Crosby, W. H. (1976) Pica: a compulsion caused by iron deficiency. British Journal of Haematology, 34, 341.
Gleditsch, E. (1959) Pica in iron deficiency. Tidsskrift for den Norske Laegeforening, 79, 398.
Green, H. H. (1925) Perverted appetites. Physiology Review, 5, 336–348. Pergamon Press and Brain Research Publication.
Greenberg, L. M. (1977) Pica and parotitis. Hospital Practice, 25.
Gutelius, M. F., Millican, F. K., Layman, E. M., Cohen, G. J. & Dublin, C. C. (1962) Nutritional studies of children with pica. Pediatrics, 29, 1012.
Hambidge, K. M. & Silverman, A. (1973) Pica with rapid improvement after dietary zinc supplementation. Archives of Disease in Childhood, 48, 567.
Hochstein, G. (1968) Pica: A study in medical and anthropological explanation. In Essays on Medical Anthropology (U.S.) (ed. Weaver, T.) Southern Anthropology Society,
Jolly, H. L. (1963) Advances in pediatrics, dirt eating or pica. Practitioner, 191, 417.
Kraepelin, E. (1913) Psychiatrie: Ein Lehrbuch fur Studierende und Arzte. Leipzig, Barth.
Diefendorf, A. R., .
Krafft-Ebing, R. Von. Textbook of insanity. (1905) by Chaddock, C. G., Philadelphia: E. A. Davis.
Lanzkowsky, P. (1959) Investigation into the aetiology and treatment of pica. Archives of Disease in Childhood, 34, 140–148.
Lourie, R. S. & Layman, E. M. (1963) Why children eat things that are not food. Children, 10, 143–146.
McDonald, R. & Marshall, S. R. (1964) The value of iron therapy in pica. Pediatrics, 34, 558.
Mitchell, D., Wells, C., Hoch, N., Lind, K., Woods, S. C. & Mitchell, L. K. (1976) Poison-induced pica in rats. Physiology and Behavior, 17, 691–697. Oxford: Pergamon Press.
Needleman, H. L. & Leviton, A. (1979) Lead and neurobehavioural deficit in children. Lancet, ii, 743.
O'Rourke, D. D., Quinn, J. G., Nicholson, J. O. & Gibson, H. H. (1967) Geophagia during pregnancy. Obstetrics and Gynaecology, 29, 581–584.
Perry, M. C. (1977) Cautopyreiphagia. New England Journal of Medicine, 296, 824.
Robischon, P. (1971) Pica practice and other hand-mouth behaviour and children's developmental level. Nursing Research, 20, 4–16.
Roselle, H. A. (1970) Association of laundry starch and clay ingestion with anaemia in New York City. Archives of Internal Medicine, 125, 57–61.
Reynolds, R. D., Binder, H. J., Miller, M. B., Chang, W. W. Y. & Horan, S. (1968) Pagophagia and iron deficiency anaemia. Annals of Internal Medicine, 69, 435–440.
Snowdon, C. T. (1977) A nutritional basis for lead pica. Physiology & Behavior, 18, 885–893. Oxford: Pergamon Press.
Snowdon, C. T. & Sanderson, B. A. (1974) Lead pica produced in rats. Science, 183, 92–94.
Theiler, A., Green, H. H. & Dutoit, P. J. (1924) Phosphorus in the livestock industry. Journal of the Department of Agriculture, South Africa, 18, 1–47.
Vermeer, D. E. (1966) Geophagy among the Tiv of Nigeria. Annals of the Association, American Geographers, 56, 197.
Woody, R. H. (1971) Controlling pica via an environmental psychobehavioural strategy: with special reference to lead poisoning. Journal of School Health, 41, 548–555.