Rich, L. G. (1963). Unit processes of sanitary engineering.
Cita Chicago Style (17a ed.)Rich, Linvil G. Unit Processes of Sanitary Engineering. New York, New York : Willey, 1963.
Cita MLA (9a ed.)Rich, Linvil G. Unit Processes of Sanitary Engineering. 1963.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
