Maev Kennedy, "Embellished Mozart manuscript uncovered. Solo parts suggests that Piano Concerto no 23 was composed for his favourite pupil, researcher says", The Guardian, 30-9-2011, consulté le 22-8-2017. Avec la reproduction de la caricature faite en marge du manuscrit.
musicassociatesofamerica.com
Alfred Mann & Mario M. Mercado: "Mozart as a Teacher", MadAminA, Music Associates of America, 1991, consulté le 22-8-2017.
