Panjaabegesan Ragupathy. (2017). The effectiveness of Health, Safety and Environment (HSE) audits in the oil and gas industry.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Panjaabegesan Ragupathy. The Effectiveness of Health, Safety and Environment (HSE) Audits in the Oil and Gas Industry. 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Panjaabegesan Ragupathy. The Effectiveness of Health, Safety and Environment (HSE) Audits in the Oil and Gas Industry. 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.