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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development و 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.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development و 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.