Cita APA (7th ed.)
Urbistondo, R., & Bays, L. (1985). Water Quality and treatment. Pergamon Press.
Cita Chicago (17th ed.)
Urbistondo, R., i L.R Bays. Water Quality and Treatment. Oxford [usw.]: Pergamon Press, 1985.
Cita MLA (9th ed.)
Urbistondo, R., i L.R Bays. Water Quality and Treatment. Pergamon Press, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.