Gaya APA
Azar, B, S.
().
Understanding and Using English Grammar
(
Ed. 2)
.
Pamulang:
Binarupa Aksara Publisher.
Gaya MLA
Azar, Betty, Schrampfer.
"Understanding and Using English Grammar".
Ed. 2
Pamulang:
Binarupa Aksara Publisher,
.
Buku.