FDA 1985 : Unites States Food and Drug Administration. Laxative Drug Products for Over-the-Counter Human Use; Tentative Final Monograph. Proposed Rules sections 334.10 and 334.52. [en ligne]. Federal Register Volume 50, Number 10, Tuesday, January 15, 1985. Rockville (MD): Department of Health and Human Services, U.S. Food and Drug Administration. [Consulté le 27 janvier 2009]. Disponible en ligne à : http://www.fda.gov/cder/otcmonographs/category_sort/laxative.htm