Organisation for Economic Co-operation and Development. (1999). Indicators of industrial activity: Sources and methods : quantitative indicators. OECD.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development. Indicators of Industrial Activity: Sources and Methods : Quantitative Indicators. Paris: OECD, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development. Indicators of Industrial Activity: Sources and Methods : Quantitative Indicators. OECD, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.