Cameron, P. (2009). Prepare for IELTS general training practice tests. Thành phố Hồ Chí Minh: Trẻ.
शिकागो स्टाइल उद्धरणCameron, Penny. Prepare for IELTS General Training Practice Tests. Thành phố Hồ Chí Minh: Trẻ, 2009.
एमएलए उद्धरणCameron, Penny. Prepare for IELTS General Training Practice Tests. Thành phố Hồ Chí Minh: Trẻ, 2009.
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