Não informado. (1989). UNCTAD review. United Nations Conference on Trade and Development.
Chicago-viite (17. p.)Não informado. UNCTAD Review. Geneva, Suíça: United Nations Conference on Trade and Development, 1989.
MLA-viite (8. p.)Não informado. UNCTAD Review. United Nations Conference on Trade and Development, 1989.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.