Baugh, L. (1998). How to write first class business correspondence. Viva.
Lua i Stíl Chicago (17ú heag.)Baugh, L. How to Write First Class Business Correspondence. New Delhi: Viva, 1998.
Lua MLA (9ú heag.)Baugh, L. How to Write First Class Business Correspondence. Viva, 1998.
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