LESIKAR, R. V. (1976). Business Communication Theory And Application. Richard D.Irwin, Inc.
Lua i Stíl Chicago (17ú heag.)LESIKAR, Raymond V. Business Communication Theory And Application. Richard D.Irwin, Inc, 1976.
Lua MLA (8ú heag.)LESIKAR, Raymond V. Business Communication Theory And Application. Richard D.Irwin, Inc, 1976.
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