Gaya APA
Rizka, H., Hidayati, N, N.
(2016).
Let's Speak English
.
Yogyakarta:
Shira Media.
Gaya MLA
Rizka, Haira., Hidayati, Niswatin, Nurul.
"Let's Speak English".
Yogyakarta:
Shira Media,
2016.
Text.