2021. American Kennel Club. [2023-01-01]. (原始内容存档于2023-09-30) (英语). Schnauzer. Wikipedia. 2022-12-31 (英语). Kim, Dennis-Bryan. The Complete Dog Breed Book
英国纽芬兰犬滚落45米悬崖仅擦伤鼻子. [2015-07-24]. (原始内容存档于2021-08-22). Newfoundland Breed Standard (页面存档备份,存于互联网档案馆) American Kennel Club, 'a sweet-dispositioned dog that acts neither
not always registered. In 1965, German breeders began to selectively breedAmerican Shetlands to create a "Sporty Shetland Pony." with a more elegant appearance
Breeds and Varieties: As of January 1, 2012. American Poultry Association. Archived 4 November 2017. Breed Classification. Poultry Club of Great Britain