Lammers, W. W. (1983). Public policy and the aging. Congressional quarterly.
Chicago-čujuhus (17. p.)Lammers, Williams W. Public Policy and the Aging. Washington: Congressional quarterly, 1983.
MLA-čujuhus (9. p.)Lammers, Williams W. Public Policy and the Aging. Congressional quarterly, 1983.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.