Gaya APA
Riyanto, S.
(2009).
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,
2009.
Buku Tex.