Wolff, E. N. (2006). Does education really help?: Skill, work, and inequality. Oxford University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wolff, Edward N. Does Education Really Help?: Skill, Work, and Inequality. Oxford: Oxford University Press, 2006.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Wolff, Edward N. Does Education Really Help?: Skill, Work, and Inequality. Oxford University Press, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.