Allen, R. T. (2014). Ethics as scales of forms. Cambridge Scholars Publishing.
Chicago Style (17th ed.) ZitazioaAllen, R. T. Ethics as Scales of Forms. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2014.
MLA (9th ed.) ZitazioaAllen, R. T. Ethics as Scales of Forms. Cambridge Scholars Publishing, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.