APA Citation

O'Connell, S. (1989). Focus on proficiency. Collings: London and Galasgow.

Trích dẫn kiểu Chicago

O'Connell, Sue. Focus On Proficiency. Collings: London and Galasgow, 1989.

MLA Citation

O'Connell, Sue. Focus On Proficiency. Collings: London and Galasgow, 1989.

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