Gaya APA
Riyanto, S. et al
(2008).
Developing Listening Skills For The TOEIC Test
.
Yogyakarta:
Pustaka pelajar.
Gaya MLA
Riyanto, Slamet. et al.
"Developing Listening Skills For The TOEIC Test".
Yogyakarta:
Pustaka pelajar,
2008.
Text.