Greenhalgh, C., & Rogers, M. (2007). Trade Marks and Performance in UK Firms: Evidence of Schumpeterian Competition through Innovation. Department of Economics (University of Oxford).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Greenhalgh, C., و M. Rogers. Trade Marks and Performance in UK Firms: Evidence of Schumpeterian Competition Through Innovation. Department of Economics (University of Oxford), 2007.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Greenhalgh, C., و M. Rogers. Trade Marks and Performance in UK Firms: Evidence of Schumpeterian Competition Through Innovation. Department of Economics (University of Oxford), 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.