* [https://www.encyclopedia.com/people/literature-and-arts/english-literature-20th-cent-present-biographies/beatrix-potter Encyclopedia.com (ed.). «Beatrix Potter» (en [[anglés]])]
* Lear 2007, p. 31, pp. 37-44, p. 458
* Lear 2007, p. 31, pp. 37-44, p. 458
−
* [https://www.smithsonianmag.com/arts-culture/how-beatrix-potter-invented-character-merchandising-180961979/ Magazine, Smithsonian. «How Beatrix Potter Invented Character Merchandising» (en [[anglés]])]
+
* [https://www.smithsonianmag.com/arts-culture/how-beatrix-potter-invented-character-merchandising-180961979/ Magazine, Smithsonian. «How Beatrix Potter Invented Character Merchandising» (en anglés)]