APA
World Health Organization, Idanpaan-Heikkila J., Khan I., Government of Finland & United Nations Fund for Drug Abuse Control. (1982). Psychotropic substances and public health problems : report of a seminar convened by the World Health Organization with the collaboration of the Government of Finland and the United Nations Fund for Drug Abuse Control. Helsinki: Government of Finland.
Chicago
World Health Organization, Idanpaan-Heikkila Juhana, Khan Inayat, Government of Finland and United Nations Fund for Drug Abuse Control. 1982. Psychotropic substances and public health problems : report of a seminar convened by the World Health Organization with the collaboration of the Government of Finland and the United Nations Fund for Drug Abuse Control. Helsinki: Government of Finland.
Harvard
World Health Organization, Idanpaan-Heikkila J., Khan I., Government of Finland and United Nations Fund for Drug Abuse Control. (1982). Psychotropic substances and public health problems : report of a seminar convened by the World Health Organization with the collaboration of the Government of Finland and the United Nations Fund for Drug Abuse Control. Helsinki: Government of Finland.
MLA
World Health Organization, Idanpaan-Heikkila Juhana, Khan Inayat, Government of Finland and United Nations Fund for Drug Abuse Control. Psychotropic substances and public health problems : report of a seminar convened by the World Health Organization with the collaboration of the Government of Finland and the United Nations Fund for Drug Abuse Control. Helsinki: Government of Finland. 1982.