Harrell, K. (2007). Connect: Building success through people, purpose and performance. Harper Collins.
Čikaški stil citiranja (17. izdanje)Harrell, Keith. Connect: Building Success Through People, Purpose and Performance. New York: Harper Collins, 2007.
MLA način citiranja (9. izdanje)Harrell, Keith. Connect: Building Success Through People, Purpose and Performance. Harper Collins, 2007.
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