Dyfyniad APA

Alexander, L. (1991). New Concept English: Practice and Progress. London: Longman.

Dyfyniad Arddull Chicago

Alexander, L.G. New Concept English: Practice and Progress. London: Longman, 1991.

Dyfyniad MLA

Alexander, L.G. New Concept English: Practice and Progress. London: Longman, 1991.

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