The Art of Singing. (Trans. by Dr. F. Seeger). New York, 1872.
Stéphen de la Madelaine: Théorie complète du Chant. Paris, 1852.
Lennox Browne and Emil Behnke: Voice, Song, and Speech. London, 1883.
John Howard: The Physiology of Artistic Singing. New York, 1886.
Gordon Holmes: A Treatise on Vocal Physiology and Hygiene. London, 1879.
Emma Seiler: The Voice in Singing. Philadelphia, 1886.
J. Frank Botume: Modern Singing Methods. Boston, 1885.
Francesco Lamperti: A Treatise on the Art of Singing. (Trans. by J. C. Griffith). New York. Original about 1876.
Wesley Mills, M. D.: Voice Production in Singing and Speaking. Philadelphia, 1906.