Qasim, Syed R., author
CRC Press,, 2018
Buku Teks
Qasim, Syed R, author
CRC Press, 2018
Buku Teks
Metcalf & Eddy, Inc.
McGraw-Hill, 1991.
Buku Teks
by Metcalf & Eddy; Revised by George Tchobanoglous, Franklin L. Burton, H David Stensel
McGraw-Hill, 2003
Buku Teks
edited by Uwe Neis and Alfred Bittner
Institut fur Wissenschaftliche Zusammenarbeit, 1984
Buku Referensi