Marcus, William
McGraw-Hill, 1955
Buku Teks
Markus, John, 1911-, author
McGraw-Hill, 1961
Buku Teks
Helfrick, Albert D.
Prentice-Hall, 1983
Buku Teks
Levy, Charles K.
Appleton-Century-Crofts, 1973
Buku Teks
Hellman, Charles I., author
Van Nostrand Reinhold, 1956
Buku Teks