Ehrenberg, R. G., & Schumann, P. L. (1982). Longer hours or more jobs?: An investigation of amending hours legislation to create employment. New York State School of Industrial and Labor Relations, Cornell University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ehrenberg, Ronald G., و Paul L. Schumann. Longer Hours or More Jobs?: An Investigation of Amending Hours Legislation to Create Employment. Ithaca, N.Y.: New York State School of Industrial and Labor Relations, Cornell University, 1982.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ehrenberg, Ronald G., و Paul L. Schumann. Longer Hours or More Jobs?: An Investigation of Amending Hours Legislation to Create Employment. New York State School of Industrial and Labor Relations, Cornell University, 1982.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.