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- The International Association of Athletics Federations has published a progression of road racing world bests and records that were widely recognized prior to ratification and official acceptance by the IAAF. According to that progression, Jim Peters' 2:17:40 performance at the Polytechnic Marathon on June 26, 1954 was a world best at the time. According to date provided by the Association of Road Racing Statisticians, they consider Peters' performance to have occurred on an "aided" course and recognize Kotila in the progression for world best in the marathon.
- "Paavo Kotila on kuollut" (in Finnish). Iltalehti. January 29, 2014. Retrieved 1 February 2014.
- "12th IAAF World Championships In Athletics: IAAF Statistics Handbook. Berlin 2009." (PDF). Monte Carlo: IAAF Media & Public Relations Department. 2009. pp. 546, 563, 565, 651, and 653. Retrieved May 15, 2010.
- Association of Road Racing Statisticians, World Marathon Rankings for 1954. Retrieved May 15, 2010.
- Association of Road Racing Statisticians, World Best Progressions- Road. Retrieved May 15, 2010.