Merkoša sitáhtat

APA-čujuhus (7. p.)
Carkhuff, R. R. (1973). The art of helping. Human Resource Development Press.
Chicago-čujuhus (17. p.)
Carkhuff, Robert R. The Art of Helping. Amherst, Massachuttes: Human Resource Development Press, 1973.
MLA-čujuhus (9. p.)
Carkhuff, Robert R. The Art of Helping. Human Resource Development Press, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.