Gaya APA
Riyanto, S. (2016).
TOEFL PREPARATION : Test of English as a Foreign language Preparation. (Ed.1).
Yogyakarta:
Penerbit Andi.
Gaya MLA
Riyanto, Slamet.
"TOEFL PREPARATION : Test of English as a Foreign language Preparation.".
Ed.1
Yogyakarta:
Penerbit Andi,
2016.
Text.