Clayton, M. Brilliant Time Management: What the most productive people know do and say (1.). Pearson Education UK.
Čikaški stil citiranja (17. izdanje)Clayton, Mike. Brilliant Time Management: What the Most Productive People Know Do and Say. 1. Pearson Education UK.
MLA način citiranja (8. izdanje)Clayton, Mike. Brilliant Time Management: What the Most Productive People Know Do and Say. 1. Pearson Education UK.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.