Kothari, Rajni
Little, Brown, 1970
Buku Teks
Farrington, Karen
Chancellor Pres, 1998
Buku Referensi
Bandyopadhyay, Sekhar
Oxford University Press, 2017
eBooks
Dowson, John
Susil Gupta, 1952
Buku Teks
Sastri, K.A. Nilakanta
S. Viswanathan, 1950
Buku Teks