This presentation explains the concept of power and leadership, their interconnections, sources of power, influence process, and their relation with staff. It starts with defining power and leadership, and then explains the role of power in leadership. It further discusses the five sources of power, namely reward power, coercive power, referent power, expert power, and legitimate power. The presentation also explains the influence process and its three types, namely instrumental compliance, internalization, and personal identification. Finally, it discusses the interconnections between power and influence, and the relation between leader and staff affect influence and power. The presentation includes references for further reading.