Palley, J. (2011). 31 High - Scoring Formulas to Answer the Ielts Speaking Questions. HCM: Tổng hợp.
استشهاد بنمط شيكاغوPalley, Jonathan. 31 High - Scoring Formulas to Answer the Ielts Speaking Questions. HCM: Tổng hợp, 2011.
MLA استشهادPalley, Jonathan. 31 High - Scoring Formulas to Answer the Ielts Speaking Questions. HCM: Tổng hợp, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.