Mitchell, John, 1913-, author
John Wiley & Sons, 1977
Buku Teks
edited by Herbert Herman
Academic Press, 1983
Buku Teks
Tausworthe, Robert C., author
Prentice-Hall, 1977
Buku Teks
edited by Lenore S. Clesceri, Arnold E. Greenberg, Andrew D. Eaton
American Public Health Association, 1998
Buku Referensi
edited by Eugene W. Rice, Rodger B. Baird, Andrew D. Eaton and Lenore S. Clesceri
American Water Works Association, 2012
Buku Teks