Karna, S. L. (1990). Prospects of industrial development: Darbhanga, Samastipur, Madhubani, districts of Bihar.
Chicago Edition CitationKarna, Sitaram Lall. Prospects of Industrial Development: Darbhanga, Samastipur, Madhubani, Districts of Bihar. New Delhi, Amar Prakashan, 1990.
Cita MLAKarna, Sitaram Lall. Prospects of Industrial Development: Darbhanga, Samastipur, Madhubani, Districts of Bihar. 1990.
Atenció: Aquestes cites poden no estar 100% correctes.