Manohar, M.
Vikas Publishing House PVT, LTD, 1983
Buku Teks SO
Brater, Ernest F. [Ernest Frederick], 1912-2003
McGraw-Hill, 1976
Buku Referensi
Brater, Ernest F. [Ernest Frederick], 1912-2003
McGraw-Hill, 1976
Buku Teks SO
Brater, Ernest F. [Ernest Frederick], 1912-2003
McGraw-Hill, 1996
Buku Referensi
Lewis, Norman
Harper & Row , 1962
Buku Referensi