Culp,Russell L, & Wesner,George Mack, C. (1978). Hand book of Advanced Waste water Treatment (2 ed.). Van Nostrand Reinhold com.
Dyfyniad Arddull ChicagoCulp,Russell L, and Culp Wesner,George Mack. Hand Book of Advanced Waste Water Treatment. 2 ed. New york: Van Nostrand Reinhold com, 1978.
Dyfyniad MLACulp,Russell L, and Culp Wesner,George Mack. Hand Book of Advanced Waste Water Treatment. 2 ed. Van Nostrand Reinhold com, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.