Stroud, K.A., author
Erlangga, 2003
Buku Teks
Glyn James
Pearson Prentice Hall, 2008
Buku Teks
Butler, Robert Brown, author
McGraw-Hill, 1984
Buku Referensi
Bajpai, A.C., author
John Wiley & Sons, 1977
Buku Teks
Holtzapple, Mark T., author
McGraw-Hill, 2003
Buku Teks