Gaya APA
Riyanto, S., Handhini, A, C.
(2016).
TOEFL Preparation
(
1)
.
Yogyakarta:
Penerbit Andi.
Gaya MLA
Riyanto, Slamet., Handhini, Anna, Christina.
"TOEFL Preparation".
1
Yogyakarta:
Penerbit Andi,
2016.
Text.