Gaya APA
Yusuf, A, M., Setyadi, B. (2006).
Teaching English As A Foreign Language .
Graha Ilmu:
Gadjah Mada University Press.
Gaya MLA
Yusuf, Ahmad, Muhammad., Setyadi, Bambang.
"Teaching English As A Foreign Language".
Graha Ilmu:
Gadjah Mada University Press,
2006.
Text.