Carlson, Bruce M., author
Mosby Elsevier, 2009
Buku Teks
Inglis, J.K., author
Pergamon Press , 1974
Buku Teks
Eisman, Louis, author
Prentice-Hall, 1964
Buku Teks
Boardman, Harry, author
Voice of America, 1974
Buku Teks
Hampton, John K., author
Wm. C. Brown, 1997
Buku Teks