Othman, Zaharah, author
Routledge, 1995
Buku Teks
Schlegel, Friedrich Von, author
Cambridge University Press, 2015
eBooks
Hjelmslev, Louis, author
The University of Wisconsin Press, 1969
Buku Teks
Landau, Lev D., author
Pergamon Press, 1986
Buku Teks
SamPaio, Joao
Routledge, 1995
Buku Teks