Gaya APA
Riyanto, S., Handhini, A, C.
().
Toeic Preparation
(
1)
.
Yogyakarta:
PT ANDI.
Gaya MLA
Riyanto, Slamet., Handhini, Anna, Christina.
"Toeic Preparation".
1
Yogyakarta:
PT ANDI,
.
Art Original.