Walker, E., Elsworth, S., & Nguyễn Văn Phước. (2001). Grammar practice for upper intermediate students (New ed.). Tp.HCM: Nxb Trẻ.
Chicago ZitierstilWalker, Elaine., Steve Elsworth, und Nguyễn Văn Phước. Grammar Practice for Upper Intermediate Students. New ed. Tp.HCM: Nxb Trẻ, 2001.
MLA ZitierstilWalker, Elaine., Steve Elsworth, und Nguyễn Văn Phước. Grammar Practice for Upper Intermediate Students. New ed. Tp.HCM: Nxb Trẻ, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.