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hva.nl
pure.hva.nl
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Oleksiak, Wojciech (9 June 2014). "Polandball – A Case Study". Culture.pl. Archived from the original on 28 September 2019. Retrieved 28 November 2019.
Ceglieski, Tomek (12 April 2011). "Legendy Internetu" [Internet Legends]. Hiro.pl (in Polish). Archived from the original on 15 April 2011. Retrieved 18 May 2023.
Hagen, Sal (15 November 2017). "Polandball is of Reddit"(PDF). pure.hva.nl. Amsterdam University of Applied Sciences. Archived(PDF) from the original on 14 August 2021. Retrieved 17 September 2020.
Cegielski, Tomek (12 April 2011). "MEMY LEGENDY INTERNETU". Hiro (in Polish). Hiro.pl. Archived from the original on 15 April 2011. Retrieved 5 August 2014.
"Apple Daily" 台灣最美麗的風景是人 真的嗎? [The most beautiful scenery in Taiwan is the people. Really?] (in Chinese). Apple Daily (Taiwanese edition). 31 July 2014. Archived from the original on 4 April 2015. Retrieved 6 August 2023.