(1994). The Ground of goufuusional ethica.
Chicago Style (17th ed.) ZitazioaThe Ground of Goufuusional Ethica. London, 1994.
MLA (9th ed.) ZitazioaThe Ground of Goufuusional Ethica. 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(1994). The Ground of goufuusional ethica.
Chicago Style (17th ed.) ZitazioaThe Ground of Goufuusional Ethica. London, 1994.
MLA (9th ed.) ZitazioaThe Ground of Goufuusional Ethica. 1994.