Kletenik, D., author
MIR Publishers, 1969
Buku Teks
White, Paul A., author
Dickenson, 1965
Buku Teks
Morrey, Charles B., author
Addison-Wesley, 1962
Buku Teks
Melzak, Z.A., author
John Wiley & Sons, 1983
Buku Teks
Hill, G.A., author
Ginn, 1889
Buku Teks