Lu, Pau-chang
Holt, Rinehart and Winston, 1973
Buku Teks
Bradie, Brian
Pearson/Prentice Hall, 2006
Buku Teks
Stoer, Josef
Springer-Verlag, 1993
Buku Teks
Atkinson, Kendall E.
John Wiley & Sons, 1978
Buku Teks
Froberg, Carl-Erik
Addison-Wesley, 1972
Buku Teks