Albano da Silveira Pinto (1883). "Serenissima Casa de Bragança". Resenha das Familias Titulares e Grandes des Portugal (in Portuguese). Lisbon: Lisboa F.A. da Silva. p. xv.
"While remaining patrilineal dynasts of the duchy of Saxe-Coburg and Gotha according to pp. 88, 116 of the 1944 Almanach de Gotha, Title 1, Chapter 1, Article 5 of the 1838 Portuguese constitution declared, with respect to Ferdinand II of Portugal's issue by his first wife, that 'the Most Serene House of Braganza is the reigning house of Portugal and continues through the Person of the Lady Queen Maria II'. Thus their mutual descendants constitute the Coburg line of the House of Braganza".
hathitrust.org
babel.hathitrust.org
"Schwarzer Adler-orden", Königlich Preussische Ordensliste (in German), vol. 1, Berlin, 1886, p. 9{{citation}}: CS1 maint: location missing publisher (link)
Sachsen (1901). "Königlich Orden". Staatshandbuch für den Königreich Sachsen: 1901. Dresden: Heinrich. p. 4 – via hathitrust.org.
meijiseitoku.org
刑部芳則 (2017). 明治時代の勲章外交儀礼(PDF) (in Japanese). 明治聖徳記念学会紀要. p. 149.
runeberg.org
Sveriges statskalender (in Swedish), 1905, p. 440, retrieved 6 January 2018 – via runeberg.org
Norges Statskalender (in Norwegian), 1890, pp. 595–596, retrieved 6 January 2018 – via runeberg.org