Gaya APA

RIYANTO, S. (2008). Developing listening skillss for the toeic test (cet.1). Yogyakarta: Pustaka pelajar.

Gaya MLA

RIYANTO, Slamet. "Developing listening skillss for the toeic test". cet.1 Yogyakarta: Pustaka pelajar, 2008. Text.