APA (7th ed.) Citation

Root, S., Callahan, J., & Billig, S. H. (2005). Improving Service-Learning Practice: Research on Models to Enhance Impacts.

Chicago Style (17th ed.) Citation

Root, Susan, Jane Callahan, and Shelley H. Billig. Improving Service-Learning Practice: Research on Models to Enhance Impacts. 2005.

MLA (9th ed.) Citation

Root, Susan, et al. Improving Service-Learning Practice: Research on Models to Enhance Impacts. 2005.