Gupta, K. C., & Gulati, D. V. (1968). A survey of accidents and working conditions in transport equipment industry. Issued by Directorate General of Factory Advice Service and Labour Institutes.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gupta, Kali Charan, و D. V. Gulati. A Survey of Accidents and Working Conditions in Transport Equipment Industry. Bombay: Issued by Directorate General of Factory Advice Service and Labour Institutes, 1968.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gupta, Kali Charan, و D. V. Gulati. A Survey of Accidents and Working Conditions in Transport Equipment Industry. Issued by Directorate General of Factory Advice Service and Labour Institutes, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.