APA aipamena

Armstrong, S. (2010). Utility indifference. Future of Humanity Institute.

Chicago Style aipamena

Armstrong, S. Utility Indifference. Future of Humanity Institute, 2010.

MLA aipamena

Armstrong, S. Utility Indifference. Future of Humanity Institute, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.