APA

Sex and age : the 1984 assessment, . (1987). Global estimates and projections of population. New York: United Nations.

Chicago

Sex and age : the 1984 assessment, . 1987. Global estimates and projections of population. New York: United Nations.

Harvard

Sex and age : the 1984 assessment, . (1987). Global estimates and projections of population. New York: United Nations.

MLA

Sex and age : the 1984 assessment, . Global estimates and projections of population. New York: United Nations. 1987.