Brown, Clive. Classical and Romantic Performing Practice 1750-1900. Oxford: Oxford University Press, 1999.
Elliott, Martha. Singing in Style. USA: Yale University, 2006.
Garcia, Manuel. New Treatise on the Art of Singing. A Compendious Method of Instruction with Examples and Exercises for the Cultivation of the Voice. (London: Hutchings & Romer, [n.d]).
Glass, Beumont. Lotte Lehmann A Life in Opera and Song. Santa Barbara: Capra Press, 1988.
Lamperti, Francesco. The art of Singing. New York: Schirmer, 1890.
Leech-Wilkinson, Daniel. “Changing Performance Styles: Singing.” Last accessed February 28, 2021. https://www.charm.rhul.ac.uk/studies/chapters/chap4.html
_____. “Challenging Performance: Classical Music Performance Norms and How to Escape Them.” Last accessed February 28, 2021. https://challengingperformance.com/the-book-21/
Lehmann, Lotte. More than singing. New York: Dover Publications, 1985.
Noorduin, Marten. “What is Historically Informed Performance? Transforming Nineteenth-Century Historically Informed Performance.” Apple Podcast, Last accessed February 7, 2021. https://podcasts.apple.com/gb/podcast/what-is-historically-informed-performance/id1455848729?i=100043173638
Potter, John. “Beggar at the Door: The Rise and Fall of Portamento in Singing,” Music & Letters, Vol. 87, No.4 (Nov 2006): 523-550.
Potter, Sarah. ”Changing Vocal Style and Technique in Britain during the Long Nineteenth Century.” PhD diss., University of Leeds, 2014.
Stam, Emlyn W. ”In Search of a Lost Language: Performing in Early-Recorded Style in Viola and String Quartet Repertoires.” PhD diss., University of Leiden, 2019.
Tunbridge, Laura. “Reading Lieder Recordings.” Journal of the American Musicological Society Vol 67, no.2 (2014): 555-559.