MURPHY, H. A. (1980). Effective Business Communications Herta A. Murphy ; Charles E. Peck. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)MURPHY, Herta A. Effective Business Communications Herta A. Murphy ; Charles E. Peck. McGraw-Hill, 1980.
Lua MLA (8ú heag.)MURPHY, Herta A. Effective Business Communications Herta A. Murphy ; Charles E. Peck. McGraw-Hill, 1980.
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