"Competition Rules 2012-2013"(PDF). IAAF Competition Rules (Centenary ed.). International Association of Athletics Federations: 130. Archived from the original(PDF) on 21 July 2014.
"Competition Rules 2012-2013"(PDF). IAAF Competition Rules (Centenary ed.). International Association of Athletics Federations: 130. Archived from the original(PDF) on 21 July 2014.