McGreal, I. P. (1970). Problems of ethics. Chandler.
Chicago-čujuhus (17. p.)McGreal, Ian Philip. Problems of Ethics. Chandler, 1970.
MLA-čujuhus (9. p.)McGreal, Ian Philip. Problems of Ethics. Chandler, 1970.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.