The text for the original version of the aria which Puccini later shortened for subsequent editions of the libretto can be found in Susan VanDiver Nicassio, Tosca's Rome: The Play and the Opera in Historical Perspective, University of Chicago Press, 2002, p. 307.
The original text of the aria that Puccini later condensed into a shorter version in subsequent publications can be discovered in Susan VanDiver Nicassio, Tosca's Rome: The Play and the Opera in Historical Perspective, University of Chicago Press, 2002, page 307.