Gaya APA
Azar, Betty S. (2009).
Understanding english grammar (4).
USA:
Pearson Longman.
Gaya Chicago
Azar, Betty S.
Understanding english grammar.
4
USA:
Pearson Longman,
2009.
.
Gaya MLA
Azar, Betty S.
Understanding english grammar.
4
USA:
Pearson Longman,
2009.
.
Gaya Turabian
Azar, Betty S.
Understanding english grammar.
4
USA:
Pearson Longman,
2009.
.