ebrary, Inc, Fredricks, J. A., & Simpkins, S. D. (2013). Organized out-of-school activities: Setting for peer relationships. Jossey-Bass.
芝加哥风格引文ebrary, Inc, Jennifer A. Fredricks, 与 Sandra D. Simpkins. Organized Out-of-school Activities: Setting for Peer Relationships. San Francisco, CA: Jossey-Bass, 2013.
MLA引文ebrary, Inc, et al. Organized Out-of-school Activities: Setting for Peer Relationships. Jossey-Bass, 2013.
警告：这些引文格式不一定是100％准确.