Institute of Political Science of Princeton, New Jersey. (1957). Political research, organization and design: PROD. A. de Grazia.
Lua i Stíl Chicago (17ú heag.)Institute of Political Science of Princeton, New Jersey. Political Research, Organization and Design: PROD. Princeton, N.J: A. de Grazia, 1957.
Lua MLA (9ú heag.)Institute of Political Science of Princeton, New Jersey. Political Research, Organization and Design: PROD. A. de Grazia, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.