ProQuest Dissertations and Theses; 1970; ProQuest Dissertations & Theses (PQDT) pg.n/a
Heck, Thomas Fitzsimons
https://es.scribd.com/document/241086509/HECK-T-F-the-Birth-of-the-Classic-Guitar-and-Its-Cultivation-in-Vienna-Reflected-in-the-Career-and-Composition-of-Mauro-Giuliani
