Locker, K. O. (2006). Business and administrative communication Kitty O.cLocker. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Locker, Kitty O. Business and Administrative Communication Kitty O.cLocker. McGraw-Hill, 2006.
Lua MLA (8ú heag.)Locker, Kitty O. Business and Administrative Communication Kitty O.cLocker. McGraw-Hill, 2006.
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