Devine, E. T. (1921). The Denver tramway strike of 1920: Report of an investigation made under the auspices of the Denver Commission of Religious Forces .. Denver.
Chicago-referens (17:e uppl.)Devine, Edward T. The Denver Tramway Strike of 1920: Report of an Investigation Made Under the Auspices of the Denver Commission of Religious Forces .. Denver, 1921.
MLA-referens (8:e uppl.)Devine, Edward T. The Denver Tramway Strike of 1920: Report of an Investigation Made Under the Auspices of the Denver Commission of Religious Forces .. Denver, 1921.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.