https://images.akc.org/pdf/breeds/standards/PolishLowlandSheepdog.pdf,
http://www.fci.be/nomenclature/Standards/251g01-en.pdf,
https://vgl.ucdavis.edu/sites/g/files/dgvnsk15116/files/media/documents/PolishLowlandSheepdog20200213b.pdf,
https://petnet.com.au/publications/10134.pdf,
https://www.ecvo.eu/media/polishlowlandsheepdog.pdf,
https://vgl.ucdavis.edu/sites/g/files/dgvnsk15116/files/media/documents/PON_Feb2024.pdf,
https://www.ukcdogs.com/docs/breeds/polish-owczarek-nizinny.pdf,
https://zkwp.pl/rasy_polskie/wstep_ang.pdf,
https://www.gov.gg/CHttpHandler.ashx?id=101300&p=0,
http://cdn.akc.org/Marketplace/Health-Statement/Polish-Lowland-Sheepdog.pdf,
https://elib.tiho-hannover.de/servlets/MCRFileNodeServlet/tiho_derivate_00000972/animals-10-01520.pdf,
https://wyoming4h.org/opportunities/wp-content/uploads/2025/10/wyoming-state-dog-show-list-of-breeds-1.pdf,
https://www.hartz.com/wp-content/uploads/2021/09/breed_chart_dogs.pdf,
https://vgl.ucdavis.edu/sites/g/files/dgvnsk15116/files/media/documents/PON_August2024.pdf,
https://kusa.co.za/images/Gallery/Polish.pdf,
https://wilderness-society.org/wp-content/uploads/2018/10/Verbreitung_GuardDogs_Karte_Print.pdf,
https://www.tampabayvets.net/wp-content/uploads/2016/06/PennHip-Breeds.pdf,
https://www.crimsonhound.com/wp-content/uploads/2023/05/Breed-Group-Handouts.pdf,
https://www.tiq.com.sg/wp-content/uploads/2024/08/Pet-Breed-List.pdf,
https://comite.je/wp-content/uploads/sites/13/2021/11/Dog-numbers-and-breeds-at-Dec-2015.pdf,
https://avmajournals.avma.org/supplemental/journals/javma/257/5/javma.257.5.507.xml/table_s1.pdf,
https://wilderness-society.org/wp-content/uploads/2018/10/Verbreitung_GuardDogs_Karte_Print.pdf,
https://redfordpetcrematorium.co.uk/wp-content/uploads/2018/12/dog-size-guide.pdf,
https://www.tiq.com.sg/wp-content/uploads/2024/08/Pet-Breed-List.pdf,
http://images.akc.org/pdf/judges/Herding_Group_7-16.pdf,
https://glampseason.jp/images/pdf/dog_breeds-en.pdf,