BOLLAERT, William. The Wars of Succession of Portugal and Spain, from 1826 to 1840: With Résumé of the Political History of Portugal and Spain to the Present Time. [s.l.]: E. Stanford 530 s. Dostupné online. (anglicky) Google-Books-ID: G3UNAQAAIAAJ.
jstor.org
COLLINS, Bruce. The Limits of British Power: Intervention in Portugal, 1820–30. The International History Review. 2013, roč. 35, čís. 4, s. 744–765. Dostupné online [cit. 2022-05-26]. ISSN0707-5332.
worldcat.org
COLLINS, Bruce. The Limits of British Power: Intervention in Portugal, 1820–30. The International History Review. 2013, roč. 35, čís. 4, s. 744–765. Dostupné online [cit. 2022-05-26]. ISSN0707-5332.