Awad, Elias M., author
Prentice-Hall, 1966
Buku Teks
Horton, William, author
John Wiley & Sons, 1994
Buku Teks
Gregory, Robert Henry, author
Wadsworth, 1960
Buku Teks
Fried, Louis, author
Reston Publishing, 1979
Buku Teks
Arnold, Robert R., author
John Wiley & Sons, 1978
Buku Teks