Gaya APA
Amrullah, A., Sikumbang, R.
(2018).
English for university students
(
1)
.
Bogor:
Ghalia Indonesia.
Gaya MLA
Amrullah, Amiruddin., Sikumbang, Risman.
"English for university students".
1
Bogor:
Ghalia Indonesia,
2018.
Text.