Isaack, T. S. (1963). Personnel practices of West Virginia firms. Bureaun of Business Research, College of Commerce, West Virginia University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Isaack, Thomas Stanley. Personnel Practices of West Virginia Firms. Morgantown: Bureaun of Business Research, College of Commerce, West Virginia University, 1963.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Isaack, Thomas Stanley. Personnel Practices of West Virginia Firms. Bureaun of Business Research, College of Commerce, West Virginia University, 1963.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.