APA Баримт

United Nations Environment Programme. (1991). Desertification control bulletin. UNEP.

Чикаго маягийн жагсаалт

United Nations Environment Programme. Desertification Control Bulletin. Nairobi: UNEP, 1991.

MLA ишлэл

United Nations Environment Programme. Desertification Control Bulletin. UNEP, 1991.

Warning: These citations may not always be 100% accurate.