Ascher, L. M. (1989). Therapeutic paradox. Guilford Press.
Chicago-čujuhus (17. p.)Ascher, L. Michael. Therapeutic Paradox. New York: Guilford Press, 1989.
MLA-čujuhus (9. p.)Ascher, L. Michael. Therapeutic Paradox. Guilford Press, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.