Gaya APA
Betsis, A., Mamas, L.
(2014).
Succeed in the TOEIC Test Volume 1
.
Yogyakarta:
Erlangga.
Gaya MLA
Betsis, Andrew., Mamas, Lawrence.
"Succeed in the TOEIC Test Volume 1".
Yogyakarta:
Erlangga,
2014.
Text.