Marchetto of Padua and Giotto's Arena Chapel Frescoes
- Speculation by Eleonora M. Beck concerning the relationship of the musician and the artist.
- http://www.lclark.edu/~nbeck/giotto.html

Speculations on Marchetto of Padua's "Fifth-Tones"
- Investigation by Joe Monzo based on the Lucidarium with proposed ratios, charts and graphs.
- http://tonalsoft.com/monzo/marchet/marchet.htm

Marchettus of Padua's Tuning and Gothic Cadential Aesthetics
- Essay with notes and sources by Margo Schulter for the Mills College Tuning Digest.
- http://tonalsoft.com/td/schulter/sch-mar.htm

Marchetto da Padova
- Biography with overview of his theoretical works and link to the Florentine Group from the Here Of A Sunday Morning radio program.
- http://www.hoasm.org/IIIA/Marchettus.html