Motivate library staff

I have been reading and searching articles about how to motivate library staff in a time of change.  - It seems that many motivation theories mainly focus on the issues from the viewpoint of managers and administrators, especially on the topics how to handle self-motivated and self-demotivated staff. The concentration is NOT on the managers themselves rather on their subordinates.  If the mangers themselves are not motivated, how can they motivate staff who are working under their instructions?

Some readings suggest that money and threat are tools to motivate staff. Yet people who work at the librray setting, generally speaking are not working for money - most libraries pay poorly to their staff. Some researchers even suggest that instrinsic motivation is the key for motivating staff - so a Master's Degree in Library Science is NOT enough to be a library manager - a degree in human psychology seems more convincing. Oh boy! ...