Fischer, L. R., & Schaffer, K. B. (1993). Older volunteers: A guide to research and practice. Sage.
Cita Chicago Style (17a ed.)Fischer, Lucy Rose, y Kay Banister Schaffer. Older Volunteers: A Guide to Research and Practice. Newbury Park: Sage, 1993.
Cita MLA (9a ed.)Fischer, Lucy Rose, y Kay Banister Schaffer. Older Volunteers: A Guide to Research and Practice. Sage, 1993.
Precaución: Estas citas no son 100% exactas.