^Julie Auger, Indiana University, “Issues of authenticity, purity, and autonomy in minority languages: What is “real” Picard, and who is an “authentic” speaker?”, Congress Minority and Diasporic Languages of Europe , 14–17 Feb. 2003 , Berkeley, US, in Pawel Nowak & Corey Yoquelet (eds.), Berkeley Linguistics Society (BLS 29). * - in France: ca. 500 000 speakers [fr] （页面存档备份，存于互联网档案馆） - in Belgium : a rough approximation is about 12% to 15% of people in province of Hainaut, i.e. ca. 150 000 to 200 000 speakers.
^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (编). Picard. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.