R. CERIELLO, V., & freeman, c. (1991). Human Resource Management systems: Strategies, tactics and techniques. lexington books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)R. CERIELLO, VINCENT, و christine freeman. Human Resource Management Systems: Strategies, Tactics and Techniques. massachusetts: lexington books, 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)R. CERIELLO, VINCENT, و christine freeman. Human Resource Management Systems: Strategies, Tactics and Techniques. lexington books, 1991.