Block, R. N., Beck, J., & Kruger, D. H. (1996). Labor law, industrial relations, and employee choice: The state of the workplace in the 1990s : hearings of the Commission on the Future o Worker-Management Relations, 1993-94. W.E. Upjohn Institute for Employment Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Block, Richard N., John Beck, و Daniel H. Kruger. Labor Law, Industrial Relations, and Employee Choice: The State of the Workplace in the 1990s : Hearings of the Commission on the Future O Worker-Management Relations, 1993-94. Kalamazoo, Mich.: W.E. Upjohn Institute for Employment Research, 1996.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Block, Richard N., et al. Labor Law, Industrial Relations, and Employee Choice: The State of the Workplace in the 1990s : Hearings of the Commission on the Future O Worker-Management Relations, 1993-94. W.E. Upjohn Institute for Employment Research, 1996.