Armstrong, M. (2013). How to manage people (2nd.). Kogan Page.
Lua i Stíl Chicago (17ú heag.)Armstrong, Michael. How to Manage People. 2nd. London: Kogan Page, 2013.
Lua MLA (9ú heag.)Armstrong, Michael. How to Manage People. 2nd. Kogan Page, 2013.
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