Kinnunen, R. (2001). Creating and testing of service ideas and service production concepts. Swedish School of Economics and Business Administration.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kinnunen, Ritva. Creating and Testing of Service Ideas and Service Production Concepts. Helsingfors: Swedish School of Economics and Business Administration, 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kinnunen, Ritva. Creating and Testing of Service Ideas and Service Production Concepts. Swedish School of Economics and Business Administration, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.