Gaya APA
Riyanto, S.
(2011).
English for your Better Future Speak English, Please 2
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"English for your Better Future Speak English, Please 2".
Yogyakarta:
Pustaka Pelajar,
2011.
Text.