Mascull B. Bill. (2004). Business Vocabulary in Use: Advanced. Cambridge, Cambridge University Press, 2004.
Lua i Stíl Chicago (17ú heag.)Mascull B. Bill. Business Vocabulary in Use: Advanced. Cambridge, Cambridge University Press, 2004, 2004.
Lua MLA (9ú heag.)Mascull B. Bill. Business Vocabulary in Use: Advanced. Cambridge, Cambridge University Press, 2004, 2004.
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