Lua APA (7ú heag.)
Willis, J. (2012). Methane evolution from wastewater conveyance. Water Environment Research Foundation.
Lua i Stíl Chicago (17ú heag.)
Willis, John. Methane Evolution from Wastewater Conveyance. Alexandria, VA: Water Environment Research Foundation, 2012.
Lua MLA (9ú heag.)
Willis, John. Methane Evolution from Wastewater Conveyance. Water Environment Research Foundation, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.