Han var en talsmann for bærekraftig arkitektur og skrev mye om emnet. Bøkene hans inkluderer:
- "The Greening of Architecture:A Guide for the 21st Century"
- "Det nye grønne hjemmet"
- "The Sustainable Home:Living Green in the 21st Century"
- "The Practical Green Building Guide:A Practical Guide for Design, Construction, and Operation"
- "Green Home Improvement:100 enkle måter å gjøre hjemmet ditt mer energieffektivt og miljøvennlig"
- "The Architecture of Green"
- "Greening by Design:Sustainable Home Architecture for the 21st Century"
- "Design Green:Sustainable Home Architecture for the 21st Century"
- "The Energy-Efficient Home:A Complete Guide to Building and Renovating for Maximum Energy Efficiency"
- "The Green Building Bible:A Complete Guide to Sustainable Design and Construction"
- "The Green Home Construction Handbook:A Complete Guide to Building and Renovating for Energy Efficiency and Sustainability"
- "Bærekraftig boligarkitektur for det 21. århundre"