Mulder, K. (2006). Sustainable development for engineers: A handbook and resource guide. Greenleaf Publishing.
Lua i Stíl Chicago (17ú heag.)Mulder, Karel. Sustainable Development for Engineers: A Handbook and Resource Guide. Sheffield, UK: Greenleaf Publishing, 2006.
Lua MLA (9ú heag.)Mulder, Karel. Sustainable Development for Engineers: A Handbook and Resource Guide. Greenleaf Publishing, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.