Gaya APA
Rizka, H. et al
(2017).
Master Pockets IELTS
(
Cet. 2)
.
Yogyakarta:
Cemerlang Publishing.
Gaya MLA
Rizka, Haira. et al.
"Master Pockets IELTS".
Cet. 2
Yogyakarta:
Cemerlang Publishing,
2017.
Text.