Harrell, K. (2007). Connect: Building success through people, purpose and performance. Harper Collins.
Παραπομπή σε μορφή Chicago (17η εκδ.)Harrell, Keith. Connect: Building Success Through People, Purpose and Performance. New York: Harper Collins, 2007.
Παραπομπή σε μορφή MLA (9th εκδ.)Harrell, Keith. Connect: Building Success Through People, Purpose and Performance. Harper Collins, 2007.
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