Cita APA (7th ed.)

MAS'UD, F. (1992). Essentials of English grammar: A practical guide.--Ed.2. BPFE.

Cita Chicago (17th ed.)

MAS'UD, Fuad. Essentials of English Grammar: A Practical Guide.--Ed.2. Yogyakarta: BPFE, 1992.

Cita MLA (9th ed.)

MAS'UD, Fuad. Essentials of English Grammar: A Practical Guide.--Ed.2. BPFE, 1992.