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The people business : how ten leaders drive engagement through internal communications
Dunstan, Annabel, (2017)
Leaders's language and employee proactivity : enhancing psychological meaningfulness and vitality
Binyamin, Galy, (2018)
Leadership through people skills
Lefton, Robert E., (2004)
Sind wir zu lustig für die Krise?
Loth, Ulrich, (2009)