Michael Hochedlinger [1] Austria's wars of emergence: war, state and society in the Habsburg monarchy. 2003. accessed August 13. 2011. p. 318
Darrell Berg (editor): The Correspondence of Christian Gottfried Krause: A Music Lover in the Age Sensibility, Ashgate Publishing Ltd, 2009 [2]
Décsy, Gyula (2004). Eurasian studies yearbook. 76. Eurolingua. „Andreas Hadik (1710–1790) was an Austrian fieldmarshall of Hungarian ethnic origin"”[3]
Mária Terézia hadvezére (Maria Terezia's general), Válogatás Hadik András táborszernagy Hadtörténelmi Levéltárban őrzött irataiból(Winnowing from András Hadik Colonel-General's kept records in The Record Office of the Ministry of Defence, (Hungary))/ [Editor: Gyongyi Farkas], 2000. Cited sentences(translation): "His father was a cavalrymen with Hungarian ancestry. Franciska Hardy had Luxembourgian ancestry and German vernacular."[4]
Décsy, Gyula (2004). Eurasian studies yearbook. 76. Eurolingua. ISBN9780931922770. „The name Hadik is a diminutive from the Slovak appellative had 'snake'. The family was thus of Slovak extraction — although he (Hadik) is often regarded as the incarnation of Magyar military genius.”