Walker, E., Ban biên dịch First news, & Elsworth, S. (2004). New edition grammar practice for Upper - Intermediate students. Tp. Hồ Chí Minh: Nxb. Trẻ.
シカゴスタイル引用形Walker, Elaine, Ban biên dịch First news, , Steve Elsworth. New Edition Grammar Practice for Upper - Intermediate Students. Tp. Hồ Chí Minh: Nxb. Trẻ, 2004.
MLA引用形式Walker, Elaine, Ban biên dịch First news, , Steve Elsworth. New Edition Grammar Practice for Upper - Intermediate Students. Tp. Hồ Chí Minh: Nxb. Trẻ, 2004.
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