APA
UNITED NATIONS D. S. (., UNITED NATIONS D. S. (., . (1967). Estimated world requirements of narcotic drugs and estimates of world production of opium in 1967. Geneva: United Nations.
Chicago
UNITED NATIONS DRUG SUPERVISORY (Body-), UNITED NATIONS DRUG SUPERVISORY (Body-), . 1967. Estimated world requirements of narcotic drugs and estimates of world production of opium in 1967. Geneva: United Nations.
Harvard
UNITED NATIONS D. S. (., UNITED NATIONS D. S. (., . (1967). Estimated world requirements of narcotic drugs and estimates of world production of opium in 1967. Geneva: United Nations.
MLA
UNITED NATIONS DRUG SUPERVISORY (Body-), UNITED NATIONS DRUG SUPERVISORY (Body-), . Estimated world requirements of narcotic drugs and estimates of world production of opium in 1967. Geneva: United Nations. 1967.
