Biografía Pedro I El cruel
http://www.biografiasyvidas.com/biografia/p/pedro_i_elcruel.htm

http://www.delsolmedina.com/GuerraPedroIEnrqII10.htm

http://ehistory.osu.edu/middleages/booksandliterature/froissart/0188.cfm

Pedro I El cruel
http://www.fuenterrebollo.com/faqs-numismatica/pedro1.html

Bibliothèque nationale de France
http://www.bnf.fr/enlum-bin/afiche.exe?a3_0039.htm&/enluminures/themes/t_1/st_1_02/a102_003.htm&Battles:%2Bother