Cita APA (7th ed.)
Rich, L. G. Unit Operations of Sanitary Engineering. Wiley.
Cita Chicago (17th ed.)
Rich, Linvil G. Unit Operations of Sanitary Engineering. Nueva York, EUA: Wiley.
Cita MLA (9th ed.)
Rich, Linvil G. Unit Operations of Sanitary Engineering. Wiley.
Atenció: Aquestes cites poden no estar 100% correctes.