Walker, E. (2003). Grammar practice for intermediate students: With answers. Nxb Trẻ.
シカゴスタイル引用形Walker, Elaine. Grammar Practice for Intermediate Students: With Answers. Nxb Trẻ, 2003.
MLA引用形式Walker, Elaine. Grammar Practice for Intermediate Students: With Answers. Nxb Trẻ, 2003.
警告: この引用は必ずしも正確ではありません.