Hopkins, J. W. (1989). The eradication of smallpox: Organizational learning and innovation in international health. Westview Press.
Lua i Stíl Chicago (17ú heag.)Hopkins, Jack W. The Eradication of Smallpox: Organizational Learning and Innovation in International Health. Boulder, Colo.: Westview Press, 1989.
Lua MLA (8ú heag.)Hopkins, Jack W. The Eradication of Smallpox: Organizational Learning and Innovation in International Health. Westview Press, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.