APA
Bihar D. o. S. a. E., .Brochure on principal public undertakings in Bihar 1968 -69. Patna: .
Chicago
Bihar Directorate of Statistics and Evaluation, .Brochure on principal public undertakings in Bihar 1968 -69. Patna: .
Harvard
Bihar D. o. S. a. E., .Brochure on principal public undertakings in Bihar 1968 -69. Patna: .
MLA
Bihar Directorate of Statistics and Evaluation, .Patna: . .