Bers, Lipman
Holt, Rinehart and Winston, Inc., 1969
Buku Teks
Moise, Edwin E.
Addison-Wesley, 1972
Buku Teks
Spiegel, Murray R., author
McGraw-Hill, 1981
Buku Teks
Salas, Saturnino L., author
John Wiley & Sons, 1982
Buku Teks
Spiegel, Murray R., author
McGraw-Hill, 1985
Buku Teks