Walker, E. (2003). Grammar practice for intermediate students: With answers. Nxb Trẻ.
Stile di citazione ChicagoWalker, Elaine. Grammar Practice for Intermediate Students: With Answers. Nxb Trẻ, 2003.
Citazione MLAWalker, Elaine. Grammar Practice for Intermediate Students: With Answers. Nxb Trẻ, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.