Zaks, Rodnay, author
Sybex, 1979
Buku Teks
Thomas, Alex Jr., author
Rinehart- Press, 1971
Buku Teks
Kemeny, John G., author
John Wiley & Sons, 1981
Buku Teks
Farrell, Joyce, author
Course technology Cengage Learning, 2012
Buku Teks
Maynard, Jeff, author
Butterworth, 1972
Buku Teks