HBR's 10 must reads for new managers HBR's ten must reads for new managers HBR's 10 must reads for mid-level managers HBR's 10 must reads on change management HBR's 10 must reads on change. HBR's 10 must reads on performance management HBR's 10 must reads on sales HBR's 10 must reads for executive teams Harvard Business Review's 10 must reads for new managers HBR's 10 must reads for CEOs