Gaya APA
Riyanto. (2008).
Developing listening skills for the toeic test .
Yogyakarta:
Pustaka Pelajar.
Gaya Chicago
Riyanto.
Developing listening skills for the toeic test.
Yogyakarta:
Pustaka Pelajar,
2008.
Text.
Gaya MLA
Riyanto.
Developing listening skills for the toeic test.
Yogyakarta:
Pustaka Pelajar,
2008.
Text.
Gaya Turabian
Riyanto.
Developing listening skills for the toeic test.
Yogyakarta:
Pustaka Pelajar,
2008.
Print.