India. Registrar general and census commissioner & Das, B. (1976). Census of India 1971. Series 4, Bihar: Report on establishments and subsidiary tables on establishment tables. Govt. of India press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিIndia. Registrar general and census commissioner এবং B.L Das. Census of India 1971. Series 4, Bihar: Report on Establishments and Subsidiary Tables on Establishment Tables. Govt. of India press, 1976.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিIndia. Registrar general and census commissioner এবং B.L Das. Census of India 1971. Series 4, Bihar: Report on Establishments and Subsidiary Tables on Establishment Tables. Govt. of India press, 1976.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.