Green, Helen (2011). "Defining the City 'Trumpeter': German Civic Identity and the Employment of Brass Instruments, c. 1500". Journal of the Royal Musical Association. doi:10.1080/02690403.2011.562714. S2CID144303968.
Green, Helen (2011). "Defining the City 'Trumpeter': German Civic Identity and the Employment of Brass Instruments, c. 1500". Journal of the Royal Musical Association. doi:10.1080/02690403.2011.562714. S2CID144303968.