Gulf Professional, 2014
eBooks
Thompson, G.H.B., author
John Wiley & Sons, 1980
Buku Teks
Hnatek, Eugene R., author
John Wiley & Sons, 1977
Buku Referensi
Stevenson, William D., author
McGraw-Hill, 1982
Buku Teks
Hughes, Fredrick W., author
Prentice-Hall, 1983
Buku Referensi