Haski-Leventhal, D., & Bargal, D. (2008). The volunteer stages and transitions model:Organizational socialization of volunteers. Human Relations, 61(1), 67-102.
[17]
Butcher, J., & Smith, P. (2010). 'Making a difference:volunteer tourism and development. Tourism Recreation Research, 35(1), 27-36.
[18]
Luoh, M. C., & Herzog, A. R. (2002). Individual consequences of volunteer and paid work in old age:health and mortality. Journal of Health and Social Behavior, 490-509.
[19]
Hank, K., & Stuck, S. (2008). Volunteer work, informal help, and care among the 50+in Europe:further evidence for ‘linked’ productive activities at older ages. Social Science Research, 37(4), 1280-1291.
[20]
Brown, E., & Ferris, J. M. (2007). Social capital and philanthropy:An analysis of the impact of social capital on individual giving and volunteering.Nonprofit and Voluntary Sector Quarterly, 36(1), 85-99.
[21]
Auten, G. E., Sieg, H., & Clotfelter, C. T. (2002). Charitable giving, income, and taxes:an analysis of panel data. American Economic Review, 371-382.
[22]
Bekkers, R.,&N. D. De Graaf (2006). Education and prosocial behavior. Manuscript. Utrecht University. Unpublished manuscript. Retrieved April 11:2007.
[23]
Chen, J., & Lu, C. (2011). Democratization and the middle class in China the middle class's attitudes toward democracy. Political Research Quarterly, 64(3), 705-719.
[24]
Gesthuizen, M., & Scheepers, P. (2012). Educational differences in volunteering in cross-national perspective individual and contextual explanations. Nonprofit and Voluntary Sector Quarterly, 41(1), 58-81.
[25]
Bussell, H., & Forbes, D. (2002). Understanding the volunteer market:The what, where, who and why of volunteering. International Journal of Nonprofit and Voluntary Sector Marketing, 7(3), 244-257.
[26]
Haski-Leventhal, D., & Bargal, D. (2008). The volunteer stages and transitions model:Organizational socialization of volunteers. Human Relations, 61(1), 67-102.
[27]
McBride, A. M., Gonzales, E., Morrow-Howell, N., & McCrary, S. (2011). Stipends in volunteer civic service:Inclusion, retention, and volunteer benefits. Public Administration Review, 71(6), 850-858.
[28]
Cuskelly, G., Taylor, T., Hoye, R., & Darcy, S. (2006). Volunteer management practices and volunteer retention:A human resource management approach. Sport Management Review, 9(2), 141-163.
[29]
Gottlieb, B. H., & Gillespie, A. A. (2008). Volunteerism, health, and civic engagement among older adults. Canadian Journal on Aging/La Revue canadienne du vieillissement, 27(04), 399-406.
[30]
Butcher, J., & Smith, P. (2010). 'Making a difference:volunteer tourism and development. Tourism Recreation Research, 35(1), 27-36.
[31]
Rioja, F. K., Valev, N. T.,2004, “Finance and the Sources of Growth at Various Stages of Economic Development”, Economic Inquiry, 42(1):127-140.
[32]
Xu, Z., “Financial Development, Investment, and Growth”, Economic Inquiry, 38:331-344.