Cita APA

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

Citación estilo Chicago

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.

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