1. Billig, S. H. (2000, May). Research on K-12 school-based service-learning. Phi Delta Kappan, 81(9), 658–661.
2. Billig, S. H. (2011). Marking the most of your time: Implementing the K-12 service-learning standards for quality practice. Prevention Researcher, 18(1), 8–12.
3. Bridgeland, J. M., Dilulio, J. J., Jr., & Wulsin, S. C. (2008). Engaged for success: Service learning as a tool for high school dropout prevention. Washington, DC: Civic Enterprises.
4. Bringle, R., & Hatcher, J. (1995). A service-learning curriculum for faculty. Michigan Journal of Community Service Learning, 2, 112–122.
5. Brownell, J. E., & Swaner, L. E. (2010). Five high-impact practices: Research on learning outcomes, completion, and quality. Washington, DC: Association of American Colleges and Universities.