APA

United Nation. Department of international economic and social affairs, . (1989). Projection methods for intergrating population varibles into development planning. New York: United Nation.

Chicago

United Nation. Department of international economic and social affairs, . 1989. Projection methods for intergrating population varibles into development planning. New York: United Nation.

Harvard

United Nation. Department of international economic and social affairs, . (1989). Projection methods for intergrating population varibles into development planning. New York: United Nation.

MLA

United Nation. Department of international economic and social affairs, . Projection methods for intergrating population varibles into development planning. New York: United Nation. 1989.