Gaya APA
Widjaja, D, G.
(2016).
COMPLETE ENGLISH GRAMMAR AND THE EXERTICES
.
Jakarta:
Bhuana Ilmu Populer.
Gaya MLA
Widjaja, Dra., Grace.
"COMPLETE ENGLISH GRAMMAR AND THE EXERTICES".
Jakarta:
Bhuana Ilmu Populer,
2016.
BK.