Smith, J. D., Ellis, A., Gaskin, K., Howlett, S., & Stuart, J. (2015, February). Volunteering impact assessment toolkit: A practical guide for assessing the difference that volunteering makes (3rd ed.). London, United Kingdom: NCVO.
McBride, A. M., Sherraden, M., Paine, A. E., & Smith, J. D. (Eds.). (2005). International service and volunteering: Developments, impacts and challenges [Special issue]. Voluntary Action: The Journal of the Institute for Volunteering Research, 7(2).
McBride, A. M., Sherraden, M. S., Ellis, A., Brewis, G., & Smith, J. D. (2005, July). International service in the context of globalization: Research conference summary report (CSD Conference Report). St. Louis, MO: Washington University, Center for Social Development.