APA
United Nations. Department of Economic and Social Affairs, . (2005). World population monitoring 2003. New York: UN.
Chicago
United Nations. Department of Economic and Social Affairs, . 2005. World population monitoring 2003. New York: UN.
Harvard
United Nations. Department of Economic and Social Affairs, . (2005). World population monitoring 2003. New York: UN.
MLA
United Nations. Department of Economic and Social Affairs, . World population monitoring 2003. New York: UN. 2005.