Cita APA (7th ed.)

O'BRIEN, T. (2016). SIMPLY GRAMMAR - BOOK 1. V CONNECT.

Cita Chicago (17th ed.)

O'BRIEN, TERRY. SIMPLY GRAMMAR - BOOK 1. NEW DELHI: V CONNECT, 2016.

Cita MLA (9th ed.)

O'BRIEN, TERRY. SIMPLY GRAMMAR - BOOK 1. V CONNECT, 2016.