Singh, U. K. (2012). Encyclopaedia of social thinkers. ABD Publishers.
Chicago Edition CitationSingh, Upendra Kumar. Encyclopaedia of Social Thinkers. New Delhi: ABD Publishers, 2012.
Deismireacht MLASingh, Upendra Kumar. Encyclopaedia of Social Thinkers. ABD Publishers, 2012.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.