"Patna gets nod for metro train". Business Standard India. 17 June 2014. Archived from the original on 5 October 2017. Retrieved 6 April 2018 – via Business Standard.
"पटना मेट्रो परियोजना को मिली हरी झंडी" [Patna Metro project received a green light]. Patna Hindi News (in Hindi). 17 June 2014. Archived from the original on 24 September 2014. Retrieved 29 September 2014.
"Patna gets nod for metro train". Business Standard India. 17 June 2014. Archived from the original on 5 October 2017. Retrieved 6 April 2018 – via Business Standard.
"पटना मेट्रो परियोजना को मिली हरी झंडी" [Patna Metro project received a green light]. Patna Hindi News (in Hindi). 17 June 2014. Archived from the original on 24 September 2014. Retrieved 29 September 2014.