Strack-Zimmermann, Benjamin. "Upendra Man Singh (Player)". national-football-teams.com. Archived from the original on 19 October 2021. Retrieved 12 December 2021.
Strack-Zimmermann, Benjamin. "Upendra Man Singh (Player)". national-football-teams.com. Archived from the original on 19 October 2021. Retrieved 12 December 2021.