Charter, M. E., & Tischner, U. E. (2001). Sustainable solutions: Developing products and services for the future.
Chicago-tyylinen lähdeviittausCharter, Martin; Editor, ja Ursula; Editor Tischner. Sustainable Solutions: Developing Products and Services for the Future. Sheffield, Greenleaf Publishing, 2001.
MLA-viiteCharter, Martin; Editor, ja Ursula; Editor Tischner. Sustainable Solutions: Developing Products and Services for the Future. 2001.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.