Heffernan, J. (1988). Social work and social welfare: An introduction. West.
Chicago-čujuhus (17. p.)Heffernan, Joseph. Social Work and Social Welfare: An Introduction. West, 1988.
MLA-čujuhus (9. p.)Heffernan, Joseph. Social Work and Social Welfare: An Introduction. West, 1988.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.