Cita APA (7th ed.)

Barnes, D. (1981). Water and wastewater engineering systems. Pitman.

Cita Chicago (17th ed.)

Barnes, D. Water and Wastewater Engineering Systems. London: Pitman, 1981.

Cita MLA (9th ed.)

Barnes, D. Water and Wastewater Engineering Systems. Pitman, 1981.

Atenció: Aquestes cites poden no estar 100% correctes.