Cameron, P., & Penny Cameron; Vanessa Todd. (2006). Prepare for IELTS: General training practice tests. Tp. Hồ Chí Minh: Trẻ.
استشهاد بنمط شيكاغوCameron, Penny, و Penny Cameron; Vanessa Todd. Prepare for IELTS: General Training Practice Tests. Tp. Hồ Chí Minh: Trẻ, 2006.
MLA استشهادCameron, Penny, و Penny Cameron; Vanessa Todd. Prepare for IELTS: General Training Practice Tests. Tp. Hồ Chí Minh: Trẻ, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.