Gaya APA
ISTIFADAH, A. (2010).
The Use of English by Science Teachers at R-SMA 2-BI Kediri/ Ayun Istifadah .
Kediri:
STAIN KEDIRI.
Gaya MLA
ISTIFADAH, Ayun.
"The Use of English by Science Teachers at R-SMA 2-BI Kediri/ Ayun Istifadah".
Kediri:
STAIN KEDIRI,
2010.
Text.