"Persian Breed Group"(PDF). TICA.org. The International Cat Association. 1 May 2004. Archived from the original(PDF) on 10 June 2015. Retrieved 10 July 2015.
Preiss, E., "British Longhair: An Experimental or an Old, Long Ingnored Breed?", WCF-Online.de, WCF 2008 General Assembly, Essen, Germany: World Cat Federation, archived from the original on 25 June 2013, retrieved 10 July 2015 Embedded Flash presentation. This tertiary source reuses information from other sources but does not name them.
Preiss, E., "British Longhair: An Experimental or an Old, Long Ingnored Breed?", WCF-Online.de, WCF 2008 General Assembly, Essen, Germany: World Cat Federation, archived from the original on 25 June 2013, retrieved 10 July 2015 Embedded Flash presentation. This tertiary source reuses information from other sources but does not name them.
"Persian Breed Group"(PDF). TICA.org. The International Cat Association. 1 May 2004. Archived from the original(PDF) on 10 June 2015. Retrieved 10 July 2015.