FUEGI, J.; FRANCIS, J.. Lovelace Babbage and the creation of the 1843 'notes'. IEEE Annals of the History of Computing, 2003-10-01, roč. 25, čís. 4, s. 16–26. Dostupné online [cit. 2017-01-07]. ISSN1058-6180. DOI: 10.1109/MAHC.2003.1253887.
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FUEGI, J.; FRANCIS, J.. Lovelace Babbage and the creation of the 1843 'notes'. IEEE Annals of the History of Computing, 2003-10-01, roč. 25, čís. 4, s. 16–26. Dostupné online [cit. 2017-01-07]. ISSN1058-6180. DOI: 10.1109/MAHC.2003.1253887.
Bodleian Archives & Manuscripts : Papers of Lady Anne Blunt (1837-1917) daughter of Ada, Countess of Lovelace, 1863-1908 [online]. archives.bodleian.ox.ac.uk, [cit. 2023-09-12]. Dostupné online.
FUEGI, J.; FRANCIS, J.. Lovelace Babbage and the creation of the 1843 'notes'. IEEE Annals of the History of Computing, 2003-10-01, roč. 25, čís. 4, s. 16–26. Dostupné online [cit. 2017-01-07]. ISSN1058-6180. DOI: 10.1109/MAHC.2003.1253887.