APA-viite

(2013). Collins skills for the TOEIC® test: Speaking and writing. Nxb. Tổng hợp Tp.HCM : Nhân Trí Việt.

Chicago-tyylinen lähdeviittaus

Collins Skills for the TOEIC® Test: Speaking and Writing. Nxb. Tổng hợp Tp.HCM : Nhân Trí Việt, 2013.

MLA-viite

Collins Skills for the TOEIC® Test: Speaking and Writing. Nxb. Tổng hợp Tp.HCM : Nhân Trí Việt, 2013.

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