BLYTON PAUL. (2007). KEY CONCEPTS IN WORK. SAGE PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)BLYTON PAUL. KEY CONCEPTS IN WORK. NEW DELHI: SAGE PUBLICATIONS, 2007.
Lua MLA (9ú heag.)BLYTON PAUL. KEY CONCEPTS IN WORK. SAGE PUBLICATIONS, 2007.
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