(1981). Water And Wastewater Engineering Systems D. Barnes [et Al.]. Pitman.
Chicago-viite (17. p.)Water And Wastewater Engineering Systems D. Barnes [et Al.]. Pitman, 1981.
MLA-viite (8. p.)Water And Wastewater Engineering Systems D. Barnes [et Al.]. Pitman, 1981.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.