Cita APA

Elaine Walker. (1998). Grammar practice for upper intermediate students. Harlow, Eng: Pearson.

Chicago Style Citation

Elaine Walker. Grammar Practice for Upper Intermediate Students. Harlow, Eng: Pearson, 1998.

Cita MLA

Elaine Walker. Grammar Practice for Upper Intermediate Students. Harlow, Eng: Pearson, 1998.

Atenció: Aquestes cites poden no estar 100% correctes.