Cita APA

Barton, L. Northstar: Focus on listening and speaking, Introductory / Laurie Barton, Polly Merdinger. U.S.A. : Longman.

Citación estilo Chicago

Barton, Laurie. Northstar: Focus On Listening and Speaking, Introductory / Laurie Barton, Polly Merdinger. U.S.A. : Longman.

Cita MLA

Barton, Laurie. Northstar: Focus On Listening and Speaking, Introductory / Laurie Barton, Polly Merdinger. U.S.A. : Longman.

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