Spiegel, R. (2012). Green building materials a guide to product selection and specification 3rd ed. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Spiegel, Ross. Green Building Materials a Guide to Product Selection and Specification 3rd Ed. John Wiley & Sons, 2012.
Lua MLA (8ú heag.)Spiegel, Ross. Green Building Materials a Guide to Product Selection and Specification 3rd Ed. John Wiley & Sons, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.