Gaya APA
Riyanto, S., Handhini, A, C. (2017).
TOEFL (Test Of English As A Foreign Language) Preparation .
Yogyakarta:
Andi Offset.
Gaya MLA
Riyanto, Slamet., Handhini, Anna, Christina.
"TOEFL (Test Of English As A Foreign Language) Preparation".
Yogyakarta:
Andi Offset,
2017.
Text.