U.S. Environmental Protection Agency. Enhanced coagulation and enhanced precipitative softening guidance manual.
Citazione stile Chigago Style (17a edizione)U.S. Environmental Protection Agency. Enhanced Coagulation and Enhanced Precipitative Softening Guidance Manual.
Citatione MLA (9a ed.)U.S. Environmental Protection Agency. Enhanced Coagulation and Enhanced Precipitative Softening Guidance Manual.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.