APA način citiranja (7. izdanje)
Willis, J. (2012). Methane evolution from wastewater conveyance. Water Environment Research Foundation.
Čikaški stil citiranja (17. izdanje)
Willis, John. Methane Evolution from Wastewater Conveyance. Alexandria, VA: Water Environment Research Foundation, 2012.
MLA način citiranja (9. izdanje)
Willis, John. Methane Evolution from Wastewater Conveyance. Water Environment Research Foundation, 2012.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.