Roberts, N. L. (1984). Dorothy Day and the Catholic worker. State University of New York Press.
Lua i Stíl Chicago (17ú heag.)Roberts, Nancy L. Dorothy Day and the Catholic Worker. Albany: State University of New York Press, 1984.
Lua MLA (8ú heag.)Roberts, Nancy L. Dorothy Day and the Catholic Worker. State University of New York Press, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.