Graduate School of Language and Culture, Osaka University, 2018
Majalah, Jurnal, Buletin
New York : The American Council on the Teaching of Foreign Language Inc
Majalah, Jurnal, Buletin
edited by J. Charles Alderson and A.H. Urquhart
Longman, 1992
Buku Teks SO
Christie, Francis
Oxford University Press, 1989
Buku Teks SO
SEAMEO Regional Language Centre, 1983
Buku Referensi