Gaya APA
Riyanto, S. et al (2008).
A quick and effective strategy to understand listening comprehension for TOEFL test (Cet.1).
Jogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet. et al.
"A quick and effective strategy to understand listening comprehension for TOEFL test".
Cet.1
Jogyakarta:
Pustaka Pelajar,
2008.
Textbook.