Cita APA (7th ed.)

AZAR, B. S. (2001). Basic english grammar vol. A.-- Ed.2. Prenhallindo.

Cita Chicago (17th ed.)

AZAR, Betty Schrampfer. Basic English Grammar Vol. A.-- Ed.2. Jakarta: Prenhallindo, 2001.

Cita MLA (9th ed.)

AZAR, Betty Schrampfer. Basic English Grammar Vol. A.-- Ed.2. Prenhallindo, 2001.