APA-viite (7. p.)
Billings, R. B., & Jones, C. V. (2008). Forecasting urban water demand (2nd ed.). American Water Works Association.
Chicago-viite (17. p.)
Billings, R. Bruce, ja Clive Vaughan Jones. Forecasting Urban Water Demand. 2nd ed. Denver, Colo.: American Water Works Association, 2008.
MLA-viite (9. p.)
Billings, R. Bruce, ja Clive Vaughan Jones. Forecasting Urban Water Demand. 2nd ed. American Water Works Association, 2008.
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