Subbiah, Rama
An Introduction to written Tamil
Kuala Lumpur T.p.] 1967
 Buku Teks
Koehler, Robert
Seoul / written by Robert Koehler
Seoul Selection, 2009
 Buku Referensi
Wehr, Hans, 1909-1981
A Dictionary of modern written Arabic
Spoken Language Services, 1976
 Buku Referensi
Aitchison, James
Guide to written English
Cassell, 1994
 Buku Teks
Halliday, M.A.K.
Spoken and written language
Oxford University Press, 1989
 Buku Teks