Gaya APA
USADIATI, W. (2009).
Contribution of L1 in EFL teaching .
Surabaya:
Petra Christian University (Faculty of Letters).
Gaya MLA
USADIATI, Wahjuningsih.
"Contribution of L1 in EFL teaching".
Surabaya:
Petra Christian University (Faculty of Letters),
2009.
Artikel.