Gaya APA
Sarwono, J., Purwanto, Y. (2013).
English For Academic Purpuses : Asuccessful Way To Learn Scientific English .
Yogyakarta:
Andi.
Gaya MLA
Sarwono, Jonathan., Purwanto, Yudhy.
"English For Academic Purpuses : Asuccessful Way To Learn Scientific English".
Yogyakarta:
Andi,
2013.
Text.