^Paul Chrystal (15 April 2016). Coffee: A Drink for the Devil. Amberley Publishing Limited. pp. 44–. ISBN 978-1-4456-4840-8.
^ a b cEnrico Massetti (22 May 2016). Turin and its Olympic Mountains. Lulu.com. pp. 17–. ISBN 978-1-365-13141-7.
^Anacleto Verrecchia (1978). La catastrofe di Nietzsche a Torino. G. Einaudi. ISBN 9788806353605.
^Martin Dunford (1 March 2011). The Rough Guide to Italy. Rough Guides. pp. 154–. ISBN 978-1-4053-8922-8.
^Codini, literally ‘pigtails’ is a term applied to reactionary politicians, apparently with reference to pre-revolutionary French hairstyles. Lo Zingarelli, s.v..