Bailey, Susan (24 January 2008) "The Evolution Of The Yorkshire Terrier" articlealley.com. Retrieved 21 July 2009. This source suggest the Paisley and Clydesdale were two distinct breeds at one time.
Castlemilk Description [online]. Castlemilk Moorit Sheep Society [cit. 2009-04-07]. Dostupné online.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
"Scots Dumpy" feathersite.com. Retrieved 20 July 2009.
"Scots Grays" feathersite.com. Retrieved 20 July 2009.
Shetland Geese [online]. feathersite.com [cit. 2008-10-22]. Dostupné online.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
"History of the Breed"Archivováno 22. 6. 2009 na Wayback Machine.. Hebridean Sheep Society. Retrieved 20 July 2009. The breed is sometimes referred to as "St. Kilda Sheep", although it has no specific connection with the archipelago.
"Endemic Vertebrates of Shetland"[nedostupný zdroj] nature-shetland.co.uk. Retrieved 20 July 2009. This source suggests that this is "a debatable breed, the Kennel Club variety probably differing significantly from the dogs that were used in Shetland in the past".
Initial grouping of several of the highland terriers (including the Scottie) under the generic name Skye terriers has caused some confusion in the breed’s lineage. There is much disagreement over whether the Skye terriers mentioned in early 16. století records actually descended from forerunners of the Scottie or vice versa. See Choosing a Scottish Terrier" Petplace.com. Retrieved 20 July 2009.
A historic Introduction [online]. Sheep-Isle [cit. 2009-04-23]. Dostupné online.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
Shetland [online]. Sheep101.info [cit. 2009-05-01]. Dostupné online.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
sheepcentre.co.uk
North Ronaldsay [online]. Seven Sisters Sheep Centre [cit. 2009-04-23]. Dostupné online.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
Dandie Dinmont Terrier History [online]. Caledonian Dandie Dinmont Terrier Club [cit. 2009-07-21]. Dostupné v archivu pořízeném dne 2009-09-10.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
Eriskay Pony [online]. Oklahoma State University [cit. 2009-03-19]. Dostupné v archivu pořízeném dne 2008-12-06.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
Castlemilk Moorit [online]. Oklahoma State University Dept. of Animal Science [cit. 2008-01-27]. Dostupné v archivu pořízeném dne 2007-11-18.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
"History of the Breed"Archivováno 22. 6. 2009 na Wayback Machine.. Hebridean Sheep Society. Retrieved 20 July 2009. The breed is sometimes referred to as "St. Kilda Sheep", although it has no specific connection with the archipelago.
North Country Cheviot [online]. Oklahoma State University, Dept. of Animal Science [cit. 2009-04-06]. Dostupné v archivu pořízeném dne 2009-02-24.Je zde použita šablona {{Cite web}} označená jako k „pouze dočasnému použití“.
