Lougheed, L. (2013). TOEIC test: Audio CD (4th edition.). TP.HCM: Trẻ; Công ty Văn hóa sáng tạo Trí Việt.
Παραπομπή Chicago StyleLougheed, Lin. TOEIC Test: Audio CD. 4th edition. TP.HCM: Trẻ; Công ty Văn hóa sáng tạo Trí Việt, 2013.
Παραπομπή MLALougheed, Lin. TOEIC Test: Audio CD. 4th edition. TP.HCM: Trẻ; Công ty Văn hóa sáng tạo Trí Việt, 2013.
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