Gaya APA
Arini, Y, D.
(2009).
A Series of Grammar Let's Study Modals (Ayo Belajar Modal)
.
Bandung:
Pakar Raya.
Gaya MLA
Arini, Yuniarti, D..
"A Series of Grammar Let's Study Modals (Ayo Belajar Modal)".
Bandung:
Pakar Raya,
2009.
Text.