Wooldridge, Susan, author
John Wiley & Sons, 1973
Buku Teks
Stallings, William, author
Pearson, 2014
Buku Teks
Stallings, William, author
Pearson, 2011
Buku Teks
Glein, George A., author
Prentice-Hall, 1972
Buku Teks
Gregory, Robert Henry, author
Wadsworth, 1963
Buku Teks