Gaya APA
Riyanto,Slamet, . (2008).
The 1st Student's Choice TOEFL ; Test Strategy for Structure and Written Expression .
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Riyanto,Slamet, .
"The 1st Student's Choice TOEFL ; Test Strategy for Structure and Written Expression".
Yogyakarta:
Pustaka Pelajar,
2008.
Text.