Byrne, J. Richard, author
McGraw-Hill, 1970
Buku Teks
Melzak, Z.A., author
John Wiley & Sons, 1983
Buku Teks
Shrode, Leroy W.
The Hayes School, 1968
Buku Teks
Keedy, Mervin L., author
Addison-Wesley Pub. Co. , 1965
Buku Teks
Robson, B.N., author
Rigby, 1968
Buku Teks