Kock, S. (1991). A strategic process for gaining external resources through long-lasting relationships: Examples from two Finnish and two Swedish industrial firms. Swedish School of Economics and Business Administration.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kock, Sören. A Strategic Process for Gaining External Resources Through Long-lasting Relationships: Examples from Two Finnish and Two Swedish Industrial Firms. Helsingfors: Swedish School of Economics and Business Administration, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kock, Sören. A Strategic Process for Gaining External Resources Through Long-lasting Relationships: Examples from Two Finnish and Two Swedish Industrial Firms. Swedish School of Economics and Business Administration, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.