Gaya APA
Azar, Betty Schrampfer. (2001).
Basic english grammar .
Jakarta:
Prenhallindo.
Gaya Chicago
Azar, Betty Schrampfer.
Basic english grammar.
Jakarta:
Prenhallindo,
2001.
Text.
Gaya MLA
Azar, Betty Schrampfer.
Basic english grammar.
Jakarta:
Prenhallindo,
2001.
Text.
Gaya Turabian
Azar, Betty Schrampfer.
Basic english grammar.
Jakarta:
Prenhallindo,
2001.
Print.