Cita APA (7th ed.)

AZAR, B. S. (1992). Fundamentals of English grammar.-- ed.2. Prentice Hall.

Cita Chicago (17th ed.)

AZAR, Betty Schrampfer. Fundamentals of English Grammar.-- Ed.2. New Jersey: Prentice Hall, 1992.

Cita MLA (9th ed.)

AZAR, Betty Schrampfer. Fundamentals of English Grammar.-- Ed.2. Prentice Hall, 1992.