APA aipamena

Collins Cobuild. (2012). Collins Cobuild Key Words for IELTS. TP. HCM: Tổng hợp.

Chicago Style aipamena

Collins Cobuild. Collins Cobuild Key Words for IELTS. TP. HCM: Tổng hợp, 2012.

MLA aipamena

Collins Cobuild. Collins Cobuild Key Words for IELTS. TP. HCM: Tổng hợp, 2012.

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