Narendren Rengasamy. (2010). Analysis on the effect of supply voltage on the cost of operation of high pressure sodium vapour lamps used in Malaysian urban street lighting system.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Narendren Rengasamy. Analysis on the Effect of Supply Voltage on the Cost of Operation of High Pressure Sodium Vapour Lamps Used in Malaysian Urban Street Lighting System. 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Narendren Rengasamy. Analysis on the Effect of Supply Voltage on the Cost of Operation of High Pressure Sodium Vapour Lamps Used in Malaysian Urban Street Lighting System. 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.