Zameeruddin, Qazi
Vikas House, 1983
Buku Teks
Barnett, Raymond A., author
Pearson Prentice Hall, 2008
Buku Teks
Armstrong, James W., author
Macmillan, 1976
Buku Teks
Campbell, Hugh G., author
Macmillan, 1974
Buku Teks
Rothenberg, Ronald I., author
John Wiley & Sons, 1980
Buku Teks