Gaya APA
Riyanto, S. et al (2008).
Developing Listening Skills For The TOEIC Test (Cetakan I November 2008).
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet. et al.
"Developing Listening Skills For The TOEIC Test".
Cetakan I November 2008
Yogyakarta:
Pustaka Pelajar,
2008.
Book.