Gaya APA
AZAR, B, S.
(2003).
Fundamentals of English Grammar: with answer key
(
Ed 3)
.
Inggris:
Pearson Longman.
Gaya MLA
AZAR, Betty, Schrampfer.
"Fundamentals of English Grammar: with answer key".
Ed 3
Inggris:
Pearson Longman,
2003.
.