APA
UNITED NATIONS I. N. C. B., UNITED NATIONS I. N. C. B., . (1971). Estimated world requirements of narcotic drugs,1971. New York: UN.
Chicago
UNITED NATIONS INTERNATIONAL NARCOTIC CONTROL BOARD, UNITED NATIONS INTERNATIONAL NARCOTIC CONTROL BOARD, . 1971. Estimated world requirements of narcotic drugs,1971. New York: UN.
Harvard
UNITED NATIONS I. N. C. B., UNITED NATIONS I. N. C. B., . (1971). Estimated world requirements of narcotic drugs,1971. New York: UN.
MLA
UNITED NATIONS INTERNATIONAL NARCOTIC CONTROL BOARD, UNITED NATIONS INTERNATIONAL NARCOTIC CONTROL BOARD, . Estimated world requirements of narcotic drugs,1971. New York: UN. 1971.
