Burian, Barbara J., author
Prentice-Hall, 1982
Buku Teks
Crawford, F. Robert, author
Prentice-Hall, 1973
Buku Teks
Gregory, Robert Henry, author
Chatto and Windus, 1963
Buku Teks
Awad, Elias M., author
Prentice-Hall, 1971
Buku Teks
Dover Publications , 1971
Buku Teks