Qasim, Syed R.
Holt, Rinehart, and Winston, 1985.
Buku Teks
Horan, N. J.
John Wiley , 1990
Buku Teks
by Metcalf & Eddy; Revised by George Tchobanoglous, Franklin L. Burton, H David Stensel
McGraw-Hill, 2003
Buku Teks
Schroeder, Edward D.
McGraw-Hill, 1977
Buku Teks
by C.P. Leslie Grady, Jr., Glen T. Daigger, Nancy G. Love and Carlos D.M. Filipe
CRC Press, 2014
Buku Teks