Daniel Chirot. How Societies Change. SAGE.
Lua i Stíl Chicago (17ú heag.)Daniel Chirot. How Societies Change. SAGE.
Lua MLA (8ú heag.)Daniel Chirot. How Societies Change. SAGE.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.