edited by Ray Sarch
McGraw-Hill, 1990
Buku Referensi
White, Curt M., author
Thomson, 2002
Buku Teks
White, Curt M., author
Cengage Learning, 2016
Buku Teks
Stallings, William, author
Macmillan, 1988
Buku Teks
Stallings, William, author
Pearson, 2014
Buku Teks