Spencer C., The National Drug Dependence Research Centre U. o. S. M. & The National Drug Dependence Research Centre U. o. S. M. (1981). Drug abuse in East Asia. Kuala Lumpur: Oxford University Press.
Chicago
Spencer C.P, The National Drug Dependence Research Centre University of Science Malaysia and The National Drug Dependence Research Centre University of Science Malaysia. 1981. Drug abuse in East Asia. Kuala Lumpur: Oxford University Press.
Harvard
Spencer C., The National Drug Dependence Research Centre U. o. S. M. and The National Drug Dependence Research Centre U. o. S. M. (1981). Drug abuse in East Asia. Kuala Lumpur: Oxford University Press.
MLA
Spencer C.P, The National Drug Dependence Research Centre University of Science Malaysia and The National Drug Dependence Research Centre University of Science Malaysia. Drug abuse in East Asia. Kuala Lumpur: Oxford University Press. 1981.
