John is a 20 year old intern at a non-profit organization. The organization has a copy machine that regularly breaks down. John has figured out how to get the machine running again quickly after a breakdown and the organization has trouble operating without him. Even when he's on vacation, people from the office call him to ask how to restart the machine. Which of the following best describes John's source of power? John is a 20 year old intern at a non-profit organization. The organization has a copy machine that regularly breaks down. John has figured out how to get the machine running again quickly after a breakdown and the organization has trouble operating without him. Even when he's on vacation, people from the office call him to ask how to restart the machine. Which of the following best describes John's source of power? Coercive Reward Expert Referent Legitimate