DeGaremo, E. Paul
Collier-Macmillan Limited, 1969
Buku Teks
Lindberg, Roy A., author
Allyn and Bacon, 1990
Buku Teks
Farag, Mahmoud M.
Prentice-Hall, 1997
Buku Teks
Amstead, B.H., author
John Wiley & Sons, 1987
Buku Teks
Amstead, B.H., author
John Wiley & Sons, 1977
Buku Teks