Babcock, Ronald D. (Ronald Dean). A Study of Sonata a Quattro K. 347 and Alma Redemptoris Mater K. 186 by Johann Joseph Fux: the Historical Significance as Works for Alto Trombone and Performance Considerations, a Lecture Recital together with Three Recitals of Selected Works by J. Albrechtsberger, R. Gregson, W. Hartley, E. Bozza, Lars-Erik Larsson, A. Pryor and Others, dissertation, May 1994; (https://digital.library.unt.edu/ark:/67531/metadc278148/m1/1/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .