Newbrook, J. (2002). PET Gold: Exam maximiser. Harlow, England: Longman.
Trích dẫn kiểu ChicagoNewbrook, Jacky. PET Gold: Exam Maximiser. Harlow, England: Longman, 2002.
Deismireacht MLANewbrook, Jacky. PET Gold: Exam Maximiser. Harlow, England: Longman, 2002.
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