Gaya APA
Riyanto, S.
(2008).
The 1st Student's Choice TOEFL Preparation
(
I)
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"The 1st Student's Choice TOEFL Preparation".
I
Yogyakarta:
Pustaka Pelajar,
2008.
Text.