APA

Kaufmann Johan, Schrijver Nico, . (1990). Changing global needs : Expanding roles for the United Nations systems. New York: Academic Council on the United Nations.

Chicago

Kaufmann Johan, Schrijver Nico, . 1990. Changing global needs : Expanding roles for the United Nations systems. New York: Academic Council on the United Nations.

Harvard

Kaufmann Johan, Schrijver Nico, . (1990). Changing global needs : Expanding roles for the United Nations systems. New York: Academic Council on the United Nations.

MLA

Kaufmann Johan, Schrijver Nico, . Changing global needs : Expanding roles for the United Nations systems. New York: Academic Council on the United Nations. 1990.