Gaya APA
Riyanto, S. (2008).
The 1 Student's Choice Toefl : Test Strategy For Listening Comprehension .
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"The 1 Student's Choice Toefl : Test Strategy For Listening Comprehension".
Yogyakarta:
Pustaka Pelajar,
2008.
Buku Tex.