Lua APA (7ú heag.)

Ober, S. (2008). Contemporary business communication (Fifth edition.). Houghton Mifflin Co..

Lua i Stíl Chicago (17ú heag.)

Ober, Scot. Contemporary Business Communication. Fifth edition. Boston, MA: Houghton Mifflin Co., 2008.

Lua MLA (8ú heag.)

Ober, Scot. Contemporary Business Communication. Fifth edition. Houghton Mifflin Co., 2008.

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