Angus, R. B. (2003). Planning, performing, and controlling projects [ada CD]. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Angus, Robert B. Planning, Performing, and Controlling Projects [ada CD]. Prentice Hall, 2003.
Lua MLA (8ú heag.)Angus, Robert B. Planning, Performing, and Controlling Projects [ada CD]. Prentice Hall, 2003.
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