Sontag, Alan (2003). The Bridge Bum: My Life and Play. Master Point Press. p. 3. ISBN 9781894154574. Retrieved 10 July 2017. 9781894154574
"Carl'Alberto Perroux" (in Italian and English). Biografie. Infobridge: Bridge for all the world (infobridge.it). Retrieved 2015-02-13. http://www.infobridge.it/Campioni_Perroux.htm
Rio de Janeiro, Brazil, Immigration Cards, 1900–1965
Francis, Henry G.; Truscott, Alan F.; Francis, Dorthy A., eds. (2001). The Official Encyclopedia of Bridge (6th ed.). Memphis, TN: American Contract Bridge League. p. 713. ISBN 0-943855-44-6. OCLC 49606900. 0-943855-44-6
Truscott, Alan (3 December 1978). "Bridge: Thanks for the Memories". The New York Times. Retrieved 10 July 2017. https://www.nytimes.com/1978/12/03/archives/bridge-thanks-for-the-memories.html