Bogart, Theodore F.
McGraw-Hill, 1992
Buku Teks
Izadian, Afshin, author
Springer Nature, 2019
eBooks
Huelsman, Lawrence P.
Prentice Hall International, 1991
Buku Teks
Johnson, David E., author
Prentice-Hall, 1992
Buku Teks
Sinisuka, Ngapuli I., author
Jurnal Teknologi, 2002
Artikel Jurnal