APA
UNITED NATIONS E. C. F. A., UNITED NATIONS E. C. F. A., . (1977). Economic Bulletin for Africa. New York: United Nations.
Chicago
UNITED NATIONS ECONOMIC COMMISSION FOR AFRICA, UNITED NATIONS ECONOMIC COMMISSION FOR AFRICA, . 1977. Economic Bulletin for Africa. New York: United Nations.
Harvard
UNITED NATIONS E. C. F. A., UNITED NATIONS E. C. F. A., . (1977). Economic Bulletin for Africa. New York: United Nations.
MLA
UNITED NATIONS ECONOMIC COMMISSION FOR AFRICA, UNITED NATIONS ECONOMIC COMMISSION FOR AFRICA, . Economic Bulletin for Africa. New York: United Nations. 1977.
