Flowers, T. H.
John Wiley & Sons, 1976
Buku Teks
Briley, Bruce E.
Addison-Wesley, Advanced Book Program , 1983
Buku Teks
Atkinson, J., author
Pitman, 1972
Buku Teks
Smith, Sydney F., author
Oxford University Press, 1978
Buku Teks
Van Nostrand Reinhold , 1970
Buku Teks