Organisation for Economic Co-operation and Development & Organisation for Economic Co-operation and Development. Directorate for Financial and Fiscal Affairs. Taxation Division. (1974). Negative income tax: An approach to the co-ordination of taxation and social welfare policies. Organisation for Economic Co-operation and Development.
Lua i Stíl Chicago (17ú heag.)Organisation for Economic Co-operation and Development agus Organisation for Economic Co-operation and Development. Directorate for Financial and Fiscal Affairs. Taxation Division. Negative Income Tax: An Approach to the Co-ordination of Taxation and Social Welfare Policies. Paris: Organisation for Economic Co-operation and Development, 1974.
Lua MLA (9ú heag.)Organisation for Economic Co-operation and Development agus Organisation for Economic Co-operation and Development. Directorate for Financial and Fiscal Affairs. Taxation Division. Negative Income Tax: An Approach to the Co-ordination of Taxation and Social Welfare Policies. Organisation for Economic Co-operation and Development, 1974.