Miller, Leslie H.
Holt, Rinehart and Winston, 1961
Buku Teks
Clarkson, Donald R.
The Shoe String Press, 1964
Buku Teks
Hafstrom, John E.
Addison-Wesely, 1961
Buku Teks
Washington, Allyn J.
Pearson - Prentice Hall, 2009
Buku Teks
Keedy, Mervin J.
Addison-Wesley , 1969
Buku Teks