APA
UNITED NATIONS P. C. N. B., UNITED NATIONS P. C. N. B., . (1968). Comparative statement of estimates and statistics on narcotic drugs for 1966. New York: UN.
Chicago
UNITED NATIONS PERMANENT CENTRAL NARCOTICS BOARD, UNITED NATIONS PERMANENT CENTRAL NARCOTICS BOARD, . 1968. Comparative statement of estimates and statistics on narcotic drugs for 1966. New York: UN.
Harvard
UNITED NATIONS P. C. N. B., UNITED NATIONS P. C. N. B., . (1968). Comparative statement of estimates and statistics on narcotic drugs for 1966. New York: UN.
MLA
UNITED NATIONS PERMANENT CENTRAL NARCOTICS BOARD, UNITED NATIONS PERMANENT CENTRAL NARCOTICS BOARD, . Comparative statement of estimates and statistics on narcotic drugs for 1966. New York: UN. 1968.
