Langacker, Ronald W.
Harcout Brace Jovanovch, 1972
Buku Teks
Burridge, Kate, author
Cambridge University Press, 2004
Buku Teks
by Bernard Bloch, George L. Trager
Baltimore, 1942
Buku Referensi
Robert, A. Hood
Mouton, 1965
Buku Teks
Tengku Silvana Sinar
DeeZed Consult , 2002
Buku Teks