Aleandri, Emelise. The Italian-American Immigrant Theatre of New York City. Charleston, SC: Arcadia, 1999. Print.

https://www.loc.gov/teachers/classroommaterials/presentationsandactivities/presentations/immigration/italian9.html

http://www.encyclopedia.com/people/literature-and-arts/film-and-television-biographies/dean-martin-american-singer-and-actor

http://www.everyculture.com/multi/Ha-La/Italian-Americans.html

https://books.google.com/books?id=3qx0PH1jwG4C&q=caffe+concerto&source=gbs_word_cloud_r&cad=6#v=snippet&q=caffe%20concerto&f=false