Brumfiel, Charles Francis, 1914-, author
Addison-Wesley, 1962
Buku Teks
Jurgensen, Ray C., author
Houghton-Miffiln, 1983
Buku Teks
Keedy, Mervin L., author
Addison-Wesley Pub. Co. , 1965
Buku Teks
Shrode, Leroy W.
The Hayes School, 1968
Buku Teks
Melzak, Z.A., author
John Wiley & Sons, 1983
Buku Teks