Fisher, J. E. (1994). Telephone skills at work. Business One Irwin/Mirror Press.
Lua i Stíl Chicago (17ú heag.)Fisher, Judith E. Telephone Skills at Work. Burr Ridge, Ill.: Business One Irwin/Mirror Press, 1994.
Lua MLA (8ú heag.)Fisher, Judith E. Telephone Skills at Work. Business One Irwin/Mirror Press, 1994.
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