Lua APA (7ú heag.)

Becker, D., & Becker, P. B. (1993). Speaking skills for business careers. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Becker, Dennis, agus Paula Borkum Becker. Speaking Skills for Business Careers. New York: McGraw-Hill, 1993.

Lua MLA (9ú heag.)

Becker, Dennis, agus Paula Borkum Becker. Speaking Skills for Business Careers. McGraw-Hill, 1993.

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