Roberts, K., & Arrow, K. (1997). Interpersonal Comparisons of the Extended Sympathy Type and the Possibility of Social Choice: Discussion. Macmillan.
Lua i Stíl Chicago (17ú heag.)Roberts, K., agus K. Arrow. Interpersonal Comparisons of the Extended Sympathy Type and the Possibility of Social Choice: Discussion. Macmillan, 1997.
Lua MLA (9ú heag.)Roberts, K., agus K. Arrow. Interpersonal Comparisons of the Extended Sympathy Type and the Possibility of Social Choice: Discussion. Macmillan, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.