Kothari, C.R., author
Vikas Publishing House, 1978
Buku Teks
Baker, G. A., author
Edwards Brothers, 1962
Buku Teks
Ross, Sheldon M., author
Elsevier , 2007
Buku Teks
Bauer, Heinz, author
Academic Press, 1981
Buku Teks
Laha, R.G., author
John Wiley & Sons, 1979
Buku Teks