Institute for the Study of Drug Dependence, Paton, W. D. M., & Crown, J. (1972). Cannabis and its derivatives: Pharmacology and experimental psychology : Proceedings of a Symposium arranged by the Institute for the Study of Drug Dependence, London, May 1972. Oxford University Press.

Institute for the Study of Drug Dependence, William D. M. Paton, and June Crown. Cannabis and Its Derivatives: Pharmacology and Experimental Psychology : Proceedings of a Symposium Arranged by the Institute for the Study of Drug Dependence, London, May 1972. London: Oxford University Press, 1972.

Institute for the Study of Drug Dependence, et al. Cannabis and Its Derivatives: Pharmacology and Experimental Psychology : Proceedings of a Symposium Arranged by the Institute for the Study of Drug Dependence, London, May 1972. Oxford University Press, 1972.