^Gerhard Dohrn-van Rossum [in German] (1996). "The First Public Clocks". History of the Hour: Clocks and Modern Temporal Orders. University of Chicago Press. p. 129. ISBN 978-0-226-15510-4.
^"(Comune: Siena)". Anagrafe delle biblioteche italiane [it] (Registry of Italian Libraries) (in Italian). Istituto Centrale per il Catalogo Unico. Retrieved 28 December 2016.
^"Forty-three museums scattered throughout the Province of Siena are part of the Fondazione Musei Senesi". Siena: Fondazione Musei Senesi. Archived from the original on April 15, 2013. Retrieved August 13, 2012.
^"Our history". Aeroporto di Siena. Retrieved August 13, 2012.
Further readingedit
Wikimedia Commons has media related to History of Siena.
Josiah Conder (1834), "Siena", Italy, The Modern Traveller, vol. 33, London: J.Duncan
Gilbert Hastings (1902), Siena: its architecture and art, London: De La More Press, OCLC 3571094, OL 7173091M
William Heywood; Lucy Olcott (1905), Guide to Siena: History and Art (3rd ed.), Siena: E. Torrini, OCLC 6980800, OL 22881481M
"Siena", Central Italy and Rome: Handbook for Travellers (15th ed.), Leipzig: Karl Baedeker, 1909, OCLC 423237
Edmund Garratt Gardner (1909), The story of Siena and San Gimignano, Mediaeval Towns (3rd ed.), London: J.M. Dent & Co., OL 23342474M
Ferdinand Schevill (1909), Siena: the story of a mediaeval commune, New York: Scribner, OL 7186295M