Marks, Trevor E.
William Ernest, 1992
Buku Teks
Whitfield, John
EPA Press, 1995
Buku Referensi
Jenkins, Brian D. (Brian David)
Blackwell Scientific Publications, 1991
Buku Teks
UHP Press, 2012
Buku Teks
Skrotzki, Bernhardt G.A.
McGraw-Hill, 1954
Buku Teks