MLA style (see MLA Style Manual and Guide to Scholarly Publishing, 3rd Ed.)
. "Guido of Arezzo."
The Canterbury Dictionary of Hymnology. Canterbury Press. Web. 17 Jul. 2025.<
http://www.hymnology.co.uk/g/guido-of-arezzo>.
Chicago style (see The Chicago Manual of Style, 16th Ed.)
. "Guido of Arezzo."
The Canterbury Dictionary of Hymnology. Canterbury Press, accessed July 17, 2025,
http://www.hymnology.co.uk/g/guido-of-arezzo.