Walker, E. (2003). Grammar practice for intermediate students: With answers. Nxb Trẻ.
استشهاد بنمط شيكاغوWalker, Elaine. Grammar Practice for Intermediate Students: With Answers. Nxb Trẻ, 2003.
MLA استشهادWalker, Elaine. Grammar Practice for Intermediate Students: With Answers. Nxb Trẻ, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.