Sensarma, P.
Naya Prokash, 1977
Buku Teks
Ghosh, Semanti
Oxford University Press, 2017
eBooks
Taifoor, Syed Muhammed
SM Perwez, 1956
Buku Teks
Sarkar, Sumit
People Publishing House, 1973
Buku Teks
Sartori, Andrew, 1969-
Univercity of Chicago Press, 2008
Buku Teks