Organisation for Economic Co-operation and Development. (2018). OECD competition assessment reviews: Portugal. Organisation for Economic Co-operation and Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development. OECD Competition Assessment Reviews: Portugal. Paris, France: Organisation for Economic Co-operation and Development, 2018.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development. OECD Competition Assessment Reviews: Portugal. Organisation for Economic Co-operation and Development, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.