Leighou, Robert B.
Tata McGraw-Hill, 1942
Buku Teks
Srikantan, B.S., author
The National Publishing, 1963
Buku Teks
Dara, S.S., author
S. Chand, 1997
Buku Teks
Bakshi, S.P.
CBS Publisher, 1992
Buku Teks
Smith, J. M., author
McGraw-Hill, 1981
Buku Teks