Backus, W. (1991). The good news about worry. Bethany house.
Chicago-čujuhus (17. p.)Backus, William. The Good News About Worry. Minneapolis: Bethany house, 1991.
MLA-čujuhus (9. p.)Backus, William. The Good News About Worry. Bethany house, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.