"Oost West wedstrijd" [East West match]. Eu-football.info (in Dutch). 19 March 1908. Archived from the original on 10 March 2023. Retrieved 3 July 2023.
"Voetbal Zwaluwen 0-6 Bolton Wanderers" [Football Zwaluwen 0-6 Bolton Wanderers]. Eu-football.info (in Dutch). 24 May 1909. Archived from the original on 3 July 2023. Retrieved 3 July 2023.
"Oost West wedstrijd" [East West match]. Eu-football.info (in Dutch). 19 March 1908. Archived from the original on 10 March 2023. Retrieved 3 July 2023.
"Voetbal Zwaluwen 0-6 Bolton Wanderers" [Football Zwaluwen 0-6 Bolton Wanderers]. Eu-football.info (in Dutch). 24 May 1909. Archived from the original on 3 July 2023. Retrieved 3 July 2023.