| Tekijä: | Sugden, R. |
| Otsikko: | Reciprocity : the supply of public goods through voluntary contributions. |
| Lehti: | Economic Journal
1984 : DEC, VOL. 94:376, p. 772-787 |
| Asiasana: | PUBLIC GOOD VOLUNTARY ORGANIZATIONS CHARITIES ETHICS |
| Kieli: | eng |
| Tiivistelmä: |
SCIMA