Citazione APA

Spellman, F. R. (2011). Spellman's Standard handbook for Wastewater operators Vol III (Second.).

Stile di citazione Chicago

Spellman, Frank R. Spellman's Standard Handbook for Wastewater Operators Vol III. Second. Florida, CRC Press, 2011.

Citazione MLA

Spellman, Frank R. Spellman's Standard Handbook for Wastewater Operators Vol III. Second. 2011.