APA-ийн эшлэл(7 дахь хэвлэлт)

(1981). An Environmental bibliography: Publications issued by unep or under its auspices 1973-1980. United Nations Environment Programme.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

An Environmental Bibliography: Publications Issued by Unep or Under Its Auspices 1973-1980. Nairobi: United Nations Environment Programme, 1981.

MLA -ийн эшлэл (9 дэх хэвлэлт)

An Environmental Bibliography: Publications Issued by Unep or Under Its Auspices 1973-1980. United Nations Environment Programme, 1981.