edited by Vincent J van Heuven, Ellen van Zanten
KITLV, 2007
Buku Teks SO
edited by Elizabeth Couper-Kuhlen and Margret Selting
Cambridge University Press, 1996
eBooks
Shanmugan, S.V.
Indian Council for Cultural Relation, 1979
Buku Teks SO
Artikel Jurnal
Schenck, Hilbert
Buku Teks