Lua APA (7ú heag.)
Billings, R. B., & Jones, C. V. (2008). Forecasting urban water demand (2nd ed.). American Water Works Association.
Lua i Stíl Chicago (17ú heag.)
Billings, R. Bruce, agus Clive Vaughan Jones. Forecasting Urban Water Demand. 2nd ed. Denver, Colo.: American Water Works Association, 2008.
Lua MLA (9ú heag.)
Billings, R. Bruce, agus Clive Vaughan Jones. Forecasting Urban Water Demand. 2nd ed. American Water Works Association, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.