Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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