Nair, Chenicheri Sid, editor
Chandos, 2014
eBooks
Chandos, 2013
eBooks
Haselbauer, Kathleen J.
Greenwood Press, 1987
Buku Referensi
Halliday, M.A.K., author
Longman, 1966
Buku Teks
Renato M. Natal Jorge, Joao Manuel R.S. Tavares, Marcos Pinotti Barbosa, A.P. Slade, editor
[, Springer], 2012
eBooks