Society of Environmental Engineers. (2019). Environmental Engineering. Mason.
Lua i Stíl Chicago (17ú heag.)Society of Environmental Engineers. Environmental Engineering. London: Mason, 2019.
Lua MLA (8ú heag.)Society of Environmental Engineers. Environmental Engineering. Mason, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.