Lua APA (7ú heag.)

Ashley, A. (2007). Oxford handbook of commercial correspondence (4.). Oxford.

Lua i Stíl Chicago (17ú heag.)

Ashley, A. Oxford Handbook of Commercial Correspondence. 4. New Delhi: Oxford, 2007.

Lua MLA (9ú heag.)

Ashley, A. Oxford Handbook of Commercial Correspondence. 4. Oxford, 2007.

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