Burridge, Kate
Cambridge University Press, 2004
Buku Teks SO
by Bernard Bloch, George L. Trager
Baltimore, 1942
Buku Referensi
Robert, A. Hood
Mouton, 1965
Buku Teks SO
Tengku Silvana Sinar
DeeZed Consult , 2002
Buku Teks
Dieterich, Thomas G.
Center for Applied Linguistics, 1979
Buku Teks