# 1957 Pekan Olahraga Nasional
**Wikidata**: [Q12504105](https://www.wikidata.org/wiki/Q12504105)  
**Source**: https://4ort.xyz/entity/1957-pekan-olahraga-nasional


## References

1. [Source](https://web.archive.org/web/20091216071747/http://www.koni.or.id/index.php/section/the_games/event/Pekan_Olahraga_Nasional_PON/games/PON_IV/id/29)