Sykes, Peter
Longmans, 1966
Buku Referensi
Miller, Audrey, author
Academic Press , 1992
Buku Teks
Larson, Richard A., author
CRC Press, 1994
Buku Teks
Mackie, Raymond K., author
Longman Scientific & Technical, 1990
Buku Teks
McMurry, John, author
Cole Publ.Com, 1992
Buku Teks