Performance Research Associates, Zemke, R., & Anderson, K. (2003). Performance Research Associates' Delivering knock your socks off service (3rd ed. revisions.). American Management Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Performance Research Associates, Ron Zemke, و Kristin Anderson. Performance Research Associates' Delivering Knock Your Socks off Service. 3rd ed. revisions. New York: American Management Association, 2003.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Performance Research Associates, et al. Performance Research Associates' Delivering Knock Your Socks off Service. 3rd ed. revisions. American Management Association, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.