APA-referens (7:e uppl.)
ebrary, Inc, Rubik, F., & Frankl, P. (2005). The future of eco-labelling: Making environmental product information systems effective. Greenleaf Pub..
Chicago-referens (17:e uppl.)
ebrary, Inc, Frieder Rubik, och Paolo Frankl. The Future of Eco-labelling: Making Environmental Product Information Systems Effective. Sheffield: Greenleaf Pub., 2005.
MLA-referens (9:e uppl.)
ebrary, Inc, et al. The Future of Eco-labelling: Making Environmental Product Information Systems Effective. Greenleaf Pub., 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.