Needle, D. (1995). Business in contextan introduction to business and its environment.: David Needle (2nd ed.). Intenational Thomson Business.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Needle, David. Business in Contextan Introduction to Business and Its Environment.: David Needle. 2nd ed. London: Intenational Thomson Business, 1995.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Needle, David. Business in Contextan Introduction to Business and Its Environment.: David Needle. 2nd ed. Intenational Thomson Business, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.