Jacobs, L. (2008). The decline of sentiment: American film in the 1920s. University of California Press.
Lua i Stíl Chicago (17ú heag.)Jacobs, Lea. The Decline of Sentiment: American Film in the 1920s. Berkeley: University of California Press, 2008.
Lua MLA (9ú heag.)Jacobs, Lea. The Decline of Sentiment: American Film in the 1920s. University of California Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.