(1998). The skilled helper: A problem-management approach to helping / Gerard Egan.
Chicago-čujuhus (17. p.)The Skilled Helper: A Problem-management Approach to Helping / Gerard Egan. 1998.
MLA-čujuhus (9. p.)The Skilled Helper: A Problem-management Approach to Helping / Gerard Egan. 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.