Gaya APA
Azar, Betty Schrampfer. (1989).
Understanding and using : english grammar / Betty Schrampfer Azar (ed.2).
New Jersey:
Prentice Hall.
Gaya Chicago
Azar, Betty Schrampfer.
Understanding and using : english grammar / Betty Schrampfer Azar.
ed.2
New Jersey:
Prentice Hall,
1989.
Textbook.
Gaya MLA
Azar, Betty Schrampfer.
Understanding and using : english grammar / Betty Schrampfer Azar.
ed.2
New Jersey:
Prentice Hall,
1989.
Textbook.
Gaya Turabian
Azar, Betty Schrampfer.
Understanding and using : english grammar / Betty Schrampfer Azar.
ed.2
New Jersey:
Prentice Hall,
1989.
Textbook.