- Andrea Passafiume. "City Lights." TCM. 2005. October 12, 2018. <http://www.tcm.com/tcmdb/title/324720/City-Lights/articles.html>.
- Roger Ebert. "City Lights." RogerEbert.com. December 21, 1997. October 12, 2018. <https://www.rogerebert.com/reviews/great-movie-city-lights-1931>.
- "City Lights." Filmsite. October 12, 2018. <http://www.filmsite.org/city.html>.
- Bill Demain. "Charlie Chaplin's City Lights." Mental Floss. February 24, 2012. October 12, 2018. <http://mentalfloss.com/article/30080/masterpieces-charlie-chaplins-city-lights>.
- Ty Burr. "Charlie Chaplin and Buster Keaton: A Crash Course." Entertainment Weekly. January 11, 2002. October 12, 2018. <https://ew.com/article/2002/01/11/charlie-chaplin-and-buster-keaton-crash-course/>.
- Henry Barnes. "Why Buster Keaton remains the king of comedy." The Guardian. April 8, 2009. October 12, 2018. <https://www.theguardian.com/film/filmblog/2009/apr/08/buster-keaton-paul-merton-silent-clowns>.