Cameron, P. (2005). Prepare for IELTS: General training practice tests. Tp.Hồ Chí Minh: Trẻ.
Παραπομπή Chicago StyleCameron, Penny. Prepare for IELTS: General Training Practice Tests. Tp.Hồ Chí Minh: Trẻ, 2005.
Παραπομπή MLACameron, Penny. Prepare for IELTS: General Training Practice Tests. Tp.Hồ Chí Minh: Trẻ, 2005.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.