APA
                UNITED NATIONS I. E. A. S. A. (. o., UNITED NATIONS I. E. A. S. A. (. o., . (1988). Population bulletin of the United Nations. New York: UN.
                
                Chicago
                UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS (Departments of-), UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS (Departments of-), . 1988. Population bulletin of the United Nations. New York: UN.
                
                Harvard
                UNITED NATIONS I. E. A. S. A. (. o., UNITED NATIONS I. E. A. S. A. (. o., . (1988). Population bulletin of the United Nations. New York: UN.
                
                MLA
                UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS (Departments of-), UNITED NATIONS INTERNATIONAL ECONOMIC AND SOCIAL AFFAIRS (Departments of-), . Population bulletin of the United Nations. New York: UN. 1988.