Cita APA (7th ed.)

(1998). Design of municipal wastewater treatment plants (4a. ed.). WEF.

Cita Chicago (17th ed.)

Design of Municipal Wastewater Treatment Plants. 4a. ed. Reston: WEF, 1998.

Cita MLA (9th ed.)

Design of Municipal Wastewater Treatment Plants. 4a. ed. WEF, 1998.