APA Баримт

UN. (1991). The triennial review of mineral development activities in the ESCAP region, 1985-1987: Mineral resources development series. UN.

Чикаго маягийн жагсаалт

UN. The Triennial Review of Mineral Development Activities in the ESCAP Region, 1985-1987: Mineral Resources Development Series. Thailand: UN, 1991.

MLA ишлэл

UN. The Triennial Review of Mineral Development Activities in the ESCAP Region, 1985-1987: Mineral Resources Development Series. UN, 1991.