Bohlman, Philip V. (1987), "The European Discovery of Music in the Islamic World and the "Non-Western" in 19th-Century Music History", The Journal of Musicology, 5 (2): 147–163, doi:10.2307/763849, JSTOR763849
Beech, George T. (1992). "Troubadour Contacts with Muslim Spain and Knowledge of Arabic : New Evidence Concerning William IX of Aquitaine". Romania. 113 (449): 14–26. doi:10.3406/roma.1992.2180.
Miller, Samuel D. (Autumn 1973), "Guido d'Arezzo: Medieval Musician and Educator", Journal of Research in Music Education, 21 (3): 239–45, doi:10.2307/3345093, JSTOR3345093, S2CID143833782
Bohlman, Philip V. (1987), "The European Discovery of Music in the Islamic World and the "Non-Western" in 19th-Century Music History", The Journal of Musicology, 5 (2): 147–163, doi:10.2307/763849, JSTOR763849
Miller, Samuel D. (Autumn 1973), "Guido d'Arezzo: Medieval Musician and Educator", Journal of Research in Music Education, 21 (3): 239–45, doi:10.2307/3345093, JSTOR3345093, S2CID143833782
Miller, Samuel D. (Autumn 1973), "Guido d'Arezzo: Medieval Musician and Educator", Journal of Research in Music Education, 21 (3): 239–45, doi:10.2307/3345093, JSTOR3345093, S2CID143833782