Catherine, S. N. (2011). Supervisory and non-supervisory employees perception towards performance appraisal system in ministry level of Sarawak state civil service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Catherine, Sendon Ngelingkong. Supervisory and Non-supervisory Employees Perception Towards Performance Appraisal System in Ministry Level of Sarawak State Civil Service. 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Catherine, Sendon Ngelingkong. Supervisory and Non-supervisory Employees Perception Towards Performance Appraisal System in Ministry Level of Sarawak State Civil Service. 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.