1. K.W. Clarkson, and D.L. Martin (1984 ), Economics of Nonproprietary Organizations (Research in Law and Economics Supplement Ser.: No. 1, JaiPress, 1984), p.154 .
2. T.E. Copeland, and K.V. Smith (1978 ), 'An Overview of Nonprofit Organizations ', Journal of Economics and Business (Winter 1978), pp.147 -154 .
3. J.F. Engel (1983 ), Averting the Financial Crisis in Christian Organizations: Insights from a Decade of Donor Research (Management Development Associates, 1983), pp.9 , 9 .
4. E.F. Fama, and M.C. Jensen (1985 ), 'Organizational Forms and Investment Decisions ', Journal of Financial Economics, (1985), pp.101 -119 .