BARWICK, J. &. B. (2016). ACTIVE SPELLING - BOOK 2. CAMBRIDGE UNIVERSITY PRESS.
Cita Chicago Style (17a ed.)BARWICK, JOHN & BARWICK. ACTIVE SPELLING - BOOK 2. DELHI: CAMBRIDGE UNIVERSITY PRESS, 2016.
Cita MLA (9a ed.)BARWICK, JOHN & BARWICK. ACTIVE SPELLING - BOOK 2. CAMBRIDGE UNIVERSITY PRESS, 2016.
Precaución: Estas citas no son 100% exactas.