Gaya APA
Riyanto, S.
(2011).
Easy toeic: test english for international communication
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"Easy toeic: test english for international communication".
Yogyakarta:
Pustaka Pelajar,
2011.
Text.