Hopkins, J. W. (1989). The eradication of smallpox: Organizational learning and innovation in international health. Westview Press.

Hopkins, Jack W. The Eradication of Smallpox: Organizational Learning and Innovation in International Health. Boulder, Colo.: Westview Press, 1989.

Hopkins, Jack W. The Eradication of Smallpox: Organizational Learning and Innovation in International Health. Westview Press, 1989.