Fowler, Charles B. (October 1967). "The Museum of Music: A History of Mechanical Instruments". Music Educators Journal. 54 (2): 45–49. doi:10.2307/3391092. JSTOR3391092. S2CID190524140.
Koetsier, Teun (2001). "On the prehistory of programmable machines: musical automata, looms, calculators". Mechanism and Machine Theory. 36 (5). Elsevier: 589–603. doi:10.1016/S0094-114X(01)00005-2.
Fowler, Charles B. (October 1967). "The Museum of Music: A History of Mechanical Instruments". Music Educators Journal. 54 (2): 45–49. doi:10.2307/3391092. JSTOR3391092. S2CID190524140.
Fowler, Charles B. (October 1967), "The Museum of Music: A History of Mechanical Instruments", Music Educators Journal, 54 (2), MENC_ The National Association for Music Education: 45–49, doi:10.2307/3391092, JSTOR3391092, S2CID190524140
Fowler, Charles B. (October 1967). "The Museum of Music: A History of Mechanical Instruments". Music Educators Journal. 54 (2): 45–49. doi:10.2307/3391092. JSTOR3391092. S2CID190524140.
Fowler, Charles B. (October 1967). "The Museum of Music: A History of Mechanical Instruments". Music Educators Journal. 54 (2): 45–49. doi:10.2307/3391092. JSTOR3391092. S2CID190524140.
Fowler, Charles B. (October 1967), "The Museum of Music: A History of Mechanical Instruments", Music Educators Journal, 54 (2), MENC_ The National Association for Music Education: 45–49, doi:10.2307/3391092, JSTOR3391092, S2CID190524140
Fowler, Charles B. (October 1967). "The Museum of Music: A History of Mechanical Instruments". Music Educators Journal. 54 (2): 45–49. doi:10.2307/3391092. JSTOR3391092. S2CID190524140.
Fowler, Charles B. (October 1967). "The Museum of Music: A History of Mechanical Instruments". Music Educators Journal. 54 (2): 45–49. doi:10.2307/3391092. JSTOR3391092. S2CID190524140.
Fowler, Charles B. (October 1967), "The Museum of Music: A History of Mechanical Instruments", Music Educators Journal, 54 (2), MENC_ The National Association for Music Education: 45–49, doi:10.2307/3391092, JSTOR3391092, S2CID190524140