warneryd, k. (1990). Economic conventions: Essays in institutional evaluation. the economic research institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)warneryd, karl. Economic Conventions: Essays in Institutional Evaluation. Stockholm: the economic research institute, 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)warneryd, karl. Economic Conventions: Essays in Institutional Evaluation. the economic research institute, 1990.