United Nations Industrial Development Organization. Glass industry , output of a seminar of energy conservation in glass industry.
Chicago-viite (17. p.)United Nations Industrial Development Organization. Glass Industry , Output of a Seminar of Energy Conservation in Glass Industry.
MLA-viite (9. p.)United Nations Industrial Development Organization. Glass Industry , Output of a Seminar of Energy Conservation in Glass Industry.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.