Cita APA

Alexander, L. (1971). New concept english: Practice and progress : suplementary written exercises. London: Longman.

Citación estilo Chicago

Alexander, L.G. New Concept English: Practice and Progress : Suplementary Written Exercises. London: Longman, 1971.

Cita MLA

Alexander, L.G. New Concept English: Practice and Progress : Suplementary Written Exercises. London: Longman, 1971.

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