توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Organisation for Economic Co-operation and Development & ProQuest (Firm). (2009). Taxing wages, 2008-2009: Special feature : non-tax compulsory payments as an additional burden on labour income. OECD.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Organisation for Economic Co-operation and Development و ProQuest (Firm). Taxing Wages, 2008-2009: Special Feature : Non-tax Compulsory Payments as an Additional Burden on Labour Income. Paris: OECD, 2009.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Organisation for Economic Co-operation and Development و ProQuest (Firm). Taxing Wages, 2008-2009: Special Feature : Non-tax Compulsory Payments as an Additional Burden on Labour Income. OECD, 2009.