Day, D., & Ellsberg, R. (1983). By little and by little: The selected writings of Dorothy Day. Knopf.
Lua i Stíl Chicago (17ú heag.)Day, Dorothy, agus Robert Ellsberg. By Little and by Little: The Selected Writings of Dorothy Day. New York: Knopf, 1983.
Lua MLA (8ú heag.)Day, Dorothy, agus Robert Ellsberg. By Little and by Little: The Selected Writings of Dorothy Day. Knopf, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.