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4 x 4 leadership and the purpose of the firm
Bradshaw, Pete, (1998)
Management : [tasks, responsibilities, practices]
Drucker, Peter F., (1999)
Introducing management : a development guide for new managers
Johnson, Bob, (1999)
Take charge product management : time-tested tips, tactics, and tools for the new or improved product manager
Geracie, Greg, (2010)