Katz issue, J. (1973). Services for Students. Jossey- Bass.
Chicago-čujuhus (17. p.)Katz issue, Joseph. Services for Students. Sanfrancisco: Jossey- Bass, 1973.
MLA-čujuhus (9. p.)Katz issue, Joseph. Services for Students. Jossey- Bass, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.