Halliday, M.A.K.
Longman, 1966
Buku Teks SO
edited by Gloria Poedjosoedarmo
SEAMEO Regional Language Centre, 2004
Buku Teks SO
Richards, Jack C.
Cambridge University Press, 1985
Buku Teks SO
Richards, Jack C.
Cambridge University Press, 1994
Buku Teks SO
Mackey, William Francis
Longman, 1978
Buku Teks SO