Hockett, Charles F.
A Course in Modern linguistics / Charles F. Hockett
Macmillan, 1958
 Buku Teks SO
Suryadi
A linguistic kaleidoscope of the malay letter : the case of the eighteenth century official letters from the sultanate of buton / Suryadi
University of Indonesia, Faculty of Humanities, 2015
 Artikel Jurnal
Sturtevant, Edgar H.
An introduction to linguistic science
Yale University Press, 1947
 Buku Teks SO
Linguistic insights in applied linguistics
editors, S.P. Corder, E. Roulet
AIMAV, 1974
 Buku Teks SO
Linguistics : an introduction to linguistic theory
Victoria A. Fromkin
Blackwell Publishers, 2001
 Buku Teks SO