Palley, J. (2011). 31 High - Scoring Formulas to Answer the Ielts Speaking Questions. HCM: Tổng hợp.
Chicago Style CitationPalley, Jonathan. 31 High - Scoring Formulas to Answer the Ielts Speaking Questions. HCM: Tổng hợp, 2011.
Cita MLAPalley, Jonathan. 31 High - Scoring Formulas to Answer the Ielts Speaking Questions. HCM: Tổng hợp, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.