Williams, Maslyn, author
Cheshire, 1970
Buku Teks
Meyer, Harold E., author
Prentice-Hall, 1992
Buku Referensi
Demas, J.N., author
Academic Press , 1983
Buku Teks
Lawless, Jerald F., 1944-, author
John Wiley & Sons, 1982
Buku Teks
Sofjan Assauri, author
Rajawali, 2012
Buku Teks