1. Allen P., Bonazzi C. & Gee D. (2001). Metaphors for Change, Partnerships, Tools and Civic Action for Sustainability, The Greenleaf Publishing.
2. Burall P. (1991). Green Design, Issues in Design, The Design Council, London.
3. Burall P. (1996). Product Development and the Environment, The Design Council, Gower Publishing Ltd.
4. Byars M. (1999). 50 Products, Innovations in Design and Materials, ProDesign Series, Rotovision, Watson – Guptill.
5. Fiksel J. (1996). Design for Environment, Creating Eco-efficient Products and Processes, McGraw-Hill.