United Nations. (1994). Protocol to the 1979 convention on long- range transboundary air pollution on further reduction of sulphur emissions = Protocole a la convention sur la pollution atmospherique transfrontiere a longue distance, de 1979 relatif a une nouvelle reduction des emissions de soufre. New York: United Nations.
Chicago Style CitationUnited Nations. Protocol to the 1979 Convention On Long- Range Transboundary Air Pollution On Further Reduction of Sulphur Emissions = Protocole a La Convention Sur La Pollution Atmospherique Transfrontiere a Longue Distance, De 1979 Relatif a Une Nouvelle Reduction Des Emissions De Soufre. New York: United Nations, 1994.
MLA CitationUnited Nations. Protocol to the 1979 Convention On Long- Range Transboundary Air Pollution On Further Reduction of Sulphur Emissions = Protocole a La Convention Sur La Pollution Atmospherique Transfrontiere a Longue Distance, De 1979 Relatif a Une Nouvelle Reduction Des Emissions De Soufre. New York: United Nations, 1994.