Gaya APA

(ed), K, G., (ed), K, S. (1979). Ethics and problems of the 21st century Kurt Baier, R. Coburn, Richard T. de George, W.K. Frankena, Alan Gewirth, Jonathan Glover, N.H. Golding, Hare, A. MacIntyre, Routley, P. Singer . : univ of notre dame.

Gaya MLA

(ed), K.E., Goodpaster., (ed), K.M., Sayre. "Ethics and problems of the 21st century Kurt Baier, R. Coburn, Richard T. de George, W.K. Frankena, Alan Gewirth, Jonathan Glover, N.H. Golding, Hare, A. MacIntyre, Routley, P. Singer". : univ of notre dame, 1979. Text.