Matthews, Jeanna
John Wiley & Sons, 2005
Buku Teks SO
Kurose, James F.
Pearson Education,, 2017
Buku Teks SO
Mcconnell, John
Prentice Hall International, 1988
Buku Teks SO
Kurose, James F.
Addison-Wesley, 2002
Buku Teks SO
Bobola, Daniel T.
Alpha Books, 1995
Buku Teks SO