Norzaidi Mohd Daud. (1999). A study of the effectiveness of using monetary incentives as a motivation factor: A case study of Majlis Perbandaran Seberang Prai (MPSP) Pulau Pinang. International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Norzaidi Mohd Daud. A Study of the Effectiveness of Using Monetary Incentives as a Motivation Factor: A Case Study of Majlis Perbandaran Seberang Prai (MPSP) Pulau Pinang. Gombak: International Islamic University Malaysia, 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Norzaidi Mohd Daud. A Study of the Effectiveness of Using Monetary Incentives as a Motivation Factor: A Case Study of Majlis Perbandaran Seberang Prai (MPSP) Pulau Pinang. International Islamic University Malaysia, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.