Παραπομπή APA

Nelson, L. (1978). Commercial correspondence and commercial English (6th edit.). London: Pitman Publishing Limiter.

Παραπομπή Chicago Style

Nelson, L.F. Commercial Correspondence and Commercial English. 6th edit. London: Pitman Publishing Limiter, 1978.

Παραπομπή MLA

Nelson, L.F. Commercial Correspondence and Commercial English. 6th edit. London: Pitman Publishing Limiter, 1978.

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