English in focus:social studies
Oxford University Press, 1978
Buku Teks
English Studies
Swets & Zeitlinger B.V., 1994
Majalah, Jurnal, Buletin
Seikei Review of English Studies
2008
Majalah, Jurnal, Buletin
A handbook of Middle English studies
Wiley-Blackwell, 2013
Buku Teks SO
Research methods for english studies
Edinburgh University Press, 2005
Buku Teks SO