Singh, N. P. (1980). The East India Company's monopoly industries in Bihar with particular reference to opium and saltpetre, 1773-1833. Sarvodaya Vangmaya.
Chicago Style (17th ed.) CitationSingh, Narayan Prasad. The East India Company's Monopoly Industries in Bihar with Particular Reference to Opium and Saltpetre, 1773-1833. Muzaffarpur, Bihar: Sarvodaya Vangmaya, 1980.
MLA (8th ed.) CitationSingh, Narayan Prasad. The East India Company's Monopoly Industries in Bihar with Particular Reference to Opium and Saltpetre, 1773-1833. Sarvodaya Vangmaya, 1980.
Warning: These citations may not always be 100% accurate.