Solfège (English Wikipedia)

McNaught, W. G. (1893). "The History and Uses of the Sol-fa Syllables". Proceedings of the Musical Association. 19. London: Novello, Ewer and Co.: 35–51. doi:10.1093/jrma/19.1.35. ISSN 0958-8442.
Miller, Samuel D. (Autumn 1973). "Guido d'Arezzo: Medieval Musician and Educator". Journal of Research in Music Education. 21 (3). MENC_ The National Association for Music Education: 239–245. doi:10.2307/3345093. JSTOR 3345093. S2CID 143833782.
Siler, H. (1956). "Toward an International Solfeggio". Journal of Research in Music Education. 4 (1): 40–43. doi:10.2307/3343838. JSTOR 3343838. S2CID 146618023.

jstor.org

Miller, Samuel D. (Autumn 1973). "Guido d'Arezzo: Medieval Musician and Educator". Journal of Research in Music Education. 21 (3). MENC_ The National Association for Music Education: 239–245. doi:10.2307/3345093. JSTOR 3345093. S2CID 143833782.
Siler, H. (1956). "Toward an International Solfeggio". Journal of Research in Music Education. 4 (1): 40–43. doi:10.2307/3343838. JSTOR 3343838. S2CID 146618023.

"Solfeggio". Merriam-Webster Online Dictionary. Merriam-Webster Online. Retrieved 27 February 2010.
"Solfège". Merriam-Webster Online Dictionary. Merriam-Webster Online. Retrieved 27 February 2010.
"Solmization". Merriam-Webster Online Dictionary. Merriam-Webster Online. Retrieved 27 February 2010.
"Sol-fa". Merriam-Webster Online Dictionary. Merriam-Webster Online. Retrieved 27 February 2010.

Yeh, Huai-Jan (12 February 2021). "Yehnian Solfège / 葉氏唱名 / Solfeggio Yehniano". Reno's Music Notes. Retrieved 1 March 2021. ... The Yehnian Solfège is an intuitive, easily adoptable, and professionally capable quartertonal solfège system ...

Miller, Samuel D. (Autumn 1973). "Guido d'Arezzo: Medieval Musician and Educator". Journal of Research in Music Education. 21 (3). MENC_ The National Association for Music Education: 239–245. doi:10.2307/3345093. JSTOR 3345093. S2CID 143833782.
Siler, H. (1956). "Toward an International Solfeggio". Journal of Research in Music Education. 4 (1): 40–43. doi:10.2307/3343838. JSTOR 3343838. S2CID 146618023.

"Movable "Do" vs Fixed "Do"". Teaching Children Music. 2 October 2012. Retrieved 18 September 2020.

Ashley P. Taylor (1 March 2017). "Newton's Colour Theory, ca. 1665". The Scientist.

McNaught, W. G. (1893). "The History and Uses of the Sol-fa Syllables". Proceedings of the Musical Association. 19. London: Novello, Ewer and Co.: 35–51. doi:10.1093/jrma/19.1.35. ISSN 0958-8442.
Thesaurus Linguarum Orientalum (1680) OCLC 61900507
Essai sur la Musique Ancienne et Moderne (1780) OCLC 61970141
Farmer, Henry George (1988). Historical facts for the Arabian Musical Influence. Ayer Publishing. pp. 72–82. ISBN 0-405-08496-X. OCLC 220811631.