Gaya APA
Understanding and Using English Grammar Third Edition with Answer Key. (1998).
USA:
Pearson Education, Inc.
Gaya Chicago
Understanding and Using English Grammar Third Edition with Answer Key.
ed.3.
USA:
Pearson Education, Inc,
1998.
.
Gaya MLA
Understanding and Using English Grammar Third Edition with Answer Key.
ed.3.
USA:
Pearson Education, Inc,
1998.
.
Gaya Turabian
Understanding and Using English Grammar Third Edition with Answer Key.
USA:
Pearson Education, Inc,
1998.
.