Simmons, D. A. (1976). Economic power. Gemini Books.
Lua i Stíl Chicago (17ú heag.)Simmons, D. A. Economic Power. Northolt: Gemini Books, 1976.
Lua MLA (8ú heag.)Simmons, D. A. Economic Power. Gemini Books, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.