Gaya APA
Christianti, D. et al
(2016).
Basic Speaking Of English
(
Ed. 1, Cet. 1)
.
Jakarta:
Grasindo.
Gaya MLA
Christianti, Diana. et al.
"Basic Speaking Of English".
Ed. 1, Cet. 1
Jakarta:
Grasindo,
2016.
Book.