Rubik, F. (2005). The future of eco-labelling: Making environmental product information systems effective. Greenleaf Publ.
Chicago-Zitierstil (17. Ausg.)Rubik, Frieder. The Future of Eco-labelling: Making Environmental Product Information Systems Effective. Sheffield: Greenleaf Publ, 2005.
MLA-Zitierstil (9. Ausg.)Rubik, Frieder. The Future of Eco-labelling: Making Environmental Product Information Systems Effective. Greenleaf Publ, 2005.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.