Clayton, M. Brilliant Time Management: What the most productive people know do and say (1.). Pearson Education UK.
Lua i Stíl Chicago (17ú heag.)Clayton, Mike. Brilliant Time Management: What the Most Productive People Know Do and Say. 1. Pearson Education UK.
Lua MLA (8ú heag.)Clayton, Mike. Brilliant Time Management: What the Most Productive People Know Do and Say. 1. Pearson Education UK.
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