Cita APA (7a ed.)

(1986). Water & wastewater international. Water And Wastewater International.

Cita Chicago Style (17a ed.)

Water & Wastewater International. Houston-Usa: Water And Wastewater International, 1986.

Cita MLA (9a ed.)

Water & Wastewater International. Water And Wastewater International, 1986.