Gruat, J. (1990). Social security schemes in Africa: Current trends and problems. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Gruat, J.-V. Social Security Schemes in Africa: Current Trends and Problems. International Labour Organization, 1990.
Citatione MLA (9a ed.)Gruat, J.-V. Social Security Schemes in Africa: Current Trends and Problems. International Labour Organization, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.