Gaya APA
Betsis, A., Mamas, L.
(2014).
SUCCEED IN THE TOEIC TEST Volume 1
.
Jakarta:
ERLANGGA.
Gaya MLA
Betsis, Andrew., Mamas, Lawrence.
"SUCCEED IN THE TOEIC TEST Volume 1".
Jakarta:
ERLANGGA,
2014.
Buku.