found: Vanhal, J.B. Concerto Fa maggiore per due fagotti ed orchestra ; Sinfonia in Fa maggiore ; Sinfonia in La minore, 1986.
found: Bach, J.C.F. Symphonies, W. I, 1-4. Four early sinfonias, ©1982.
found: Oxford English dictionaries website, Nov. 13, 2018(sinfonia: A symphony)
found: Merriam-Webster dictionary online, Nov. 13, 2018(sinfonia plural sinfonie 1. an orchestral prelude to a vocal work (such as an opera) especially in the 18th century : overture. 2. ritornello sense 1, symphony sense 2c)
found: Grove music online, Nov. 13, 2018(Sinfonia (It.). A term which has been in use since the late 16th century to designate several types of piece for or with instrumental ensemble, most notably the concert symphony.)