Kultgen, J. H. (1988). Ethics and professionalism. University of Pennsylvania Press.
Chicago-čujuhus (17. p.)Kultgen, John H. Ethics and Professionalism. Philadelphia: University of Pennsylvania Press, 1988.
MLA-čujuhus (9. p.)Kultgen, John H. Ethics and Professionalism. University of Pennsylvania Press, 1988.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.