Perrin, G. (1969). Reflections on fifty years of social security. International Labour Organization.
Cita Chicago Style (17a ed.)Perrin, Guy. Reflections on Fifty Years of Social Security. International Labour Organization, 1969.
Cita MLA (9a ed.)Perrin, Guy. Reflections on Fifty Years of Social Security. International Labour Organization, 1969.
Precaución: Estas citas no son 100% exactas.