Subbiah, Rama
Kuala Lumpur T.p.] 1967
Buku Teks
Koehler, Robert
Seoul Selection, 2009
Buku Referensi
Wehr, Hans, 1909-1981
Spoken Language Services, 1976
Buku Referensi
Aitchison, James
Cassell, 1994
Buku Teks
Halliday, M.A.K.
Oxford University Press, 1989
Buku Teks