Rajan, Mohan Sundara
Publications Division, Ministry of Information & Broadcasting, Govt. of India, 2008
Buku Teks
Rajan, Mohan Sundara
Asian Development Bank, 1986
Buku Teks
Joshi, Akshay, author
Knowledge World, 2001
Buku Teks
Besserer, C. W.
Prentice-Hall, 1959
Buku Teks
Basu, Durga Das,
Prentice Hall of India, 2007
Buku Teks