Gaya APA
Riyanto, S.
(2011).
Easy TOEIC test of English for international Communication
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"Easy TOEIC test of English for international Communication".
Yogyakarta:
Pustaka Pelajar,
2011.
Text.