"Roberto Vecchioni, The Song of the Theater Song. Notes on the specificity of a language; in Gaber, Giorgio, il Signor G. Told by intellectuals, friends, artists, edited by Andrea Pedrinelli, Kowalski, Milan, C.E.2008, pp. 207-210. ISBN 978-88-7496-754-4"
January 1, 1970
https://en.wikiquote.org/wiki/Roberto_Vecchioni