Lua APA (7ú heag.)

Tacey, W. S. (1975). Business and professional speaking (2d ed.). W. C. Brown Co..

Lua i Stíl Chicago (17ú heag.)

Tacey, William Sanford. Business and Professional Speaking. 2d ed. Dubuque, Iowa: W. C. Brown Co., 1975.

Lua MLA (9ú heag.)

Tacey, William Sanford. Business and Professional Speaking. 2d ed. W. C. Brown Co., 1975.

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