As a graduating undergraduate in RSS, an article I would recommend reading is:
Bang, H. (2011). Leader–member exchange in nonprofit sport organizations. Nonprofit Management and Leadership, 22(1), 85-105.
Not-for-profit sport and recreation organizations rely heavily on volunteers to help deliver successful programs. Proper management of these volunteers is important to retaining those volunteers and maintaining culture within an organization. In this article, Bang suggests that the best way to manage volunteers is by using the leader-member exchange theory of leadership. This theory focuses on the dyadic relationship between the leader and the follower. Because volunteers are contributing their efforts for purposes beyond monetary gain, developing a positive relationship with volunteer workers is key to providing a good volunteer experience, and retaining these workers. This is particularly relevant to sport and recreation because of the numerous organizations who are managed by one executive director, and rely on volunteers. The article is a must read for anyone seeking employment in the not-for-profit sector.