APA Баримт

United nations. (1990). Compendium of Ongoing projects as of 31 December 1989. UN.

Чикаго маягийн жагсаалт

United nations. Compendium of Ongoing Projects as of 31 December 1989. New York: UN, 1990.

MLA ишлэл

United nations. Compendium of Ongoing Projects as of 31 December 1989. UN, 1990.