Thomas, Benjamin W., 1937-. The Lute Books of Giulio Cesare Barbetta: A Polyphonic Transcription of the Composer's Complete Works and an Analysis of the Fourteen Fantasias Volume II, dissertation, August 1973; (https://digital.library.unt.edu/ark:/67531/metadc500881/m1/1/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .