Teggart, Frederick J.
University of California Press, 1939
Buku Teks
Newmeyer, Frederick J.
Routledge, 1996
Buku Teks
Declareuil, J.
Kegan Paul, 1927
Buku Teks
Cambridge University Press, 1995
eBooks
Tambiah, S.J.
Cambridge University Press, 1976
Buku Teks