Banerjee, Sumanta
Oxford University Press, 2016
eBooks
edited by Sukanta Chaudhuri
Oxford University Press, 1990
Buku Referensi
Storey, David
Pearson/Prentice Hall, 2001
Buku Teks
Gunn, Geoffrey C.
Boulder Westview Press 1990,
Buku Teks
Bonea, Amelia
Oxford University Press, 2016
eBooks