Παραπομπή APA

Worcester, A., Eric Williamson, & Lark Bowerman. (2007). Building Skills for the TOEFL iBT: Beginning. TP. Hồ Chí Minh: Trẻ; First News.

Παραπομπή Chicago Style

Worcester, Adam, Eric Williamson, και Lark Bowerman. Building Skills for the TOEFL IBT: Beginning. TP. Hồ Chí Minh: Trẻ; First News, 2007.

Παραπομπή MLA

Worcester, Adam, Eric Williamson, και Lark Bowerman. Building Skills for the TOEFL IBT: Beginning. TP. Hồ Chí Minh: Trẻ; First News, 2007.

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