edited by M.G. Hesse
North-Holland, 1975
Buku Teks
Stevick, Earl W.
Cambridge University Press, 1982
Buku Teks
SEAMEO Regional Language Centre, 1996
Buku Teks
edited by Michael Byram
Routledge, 2000 ; 2004
Buku Referensi
edited by Wolf Gewehr
Routledge, 1998
Buku Teks