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
Beyer, Hans, author
[Publisher not identified], [Date of publication not identified]
Buku Teks