Gaya APA
Riyanto, S. (2008).
The 1st Student's Choice TOEFL Preparation: Test of English As A Foreign Language) .
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto, Slamet.
"The 1st Student's Choice TOEFL Preparation: Test of English As A Foreign Language)".
Yogyakarta:
Pustaka Pelajar,
2008.
Text.