International Medical Council on Drug Use, National Federation of Parents for Drug-Free Youth (U.S.), Nahas, G. G., Brill, H., & Frick, H. C. (1981). Drug abuse in the modern world: A perspective for the eighties : an international symposium held at the College of Physicians and Surgeons of Columbia University. Pergamon Press.
Cita Chicago Style (17a ed.)International Medical Council on Drug Use, National Federation of Parents for Drug-Free Youth (U.S.), Gabriel G. Nahas, Henry Brill, y H. C. Frick. Drug Abuse in the Modern World: A Perspective for the Eighties : An International Symposium Held at the College of Physicians and Surgeons of Columbia University. New York: Pergamon Press, 1981.
Cita MLA (8a ed.)International Medical Council on Drug Use, et al. Drug Abuse in the Modern World: A Perspective for the Eighties : An International Symposium Held at the College of Physicians and Surgeons of Columbia University. Pergamon Press, 1981.