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