Gaya APA
Azar, Betty Schrampfer. (1999).
Understanding and using english grammar (third edition) .
United States of America:
Betty Schrampfer Azar.
Gaya Chicago
Azar, Betty Schrampfer.
Understanding and using english grammar (third edition).
United States of America:
Betty Schrampfer Azar,
1999.
Text.
Gaya MLA
Azar, Betty Schrampfer.
Understanding and using english grammar (third edition).
United States of America:
Betty Schrampfer Azar,
1999.
Text.
Gaya Turabian
Azar, Betty Schrampfer.
Understanding and using english grammar (third edition).
United States of America:
Betty Schrampfer Azar,
1999.
Print.