University of Illinois (Urbana-Champaign campus). Library School. (1949). Occasional papers. University of Illinois Library School.
Chicago-referens (17:e uppl.)University of Illinois (Urbana-Champaign campus). Library School. Occasional Papers. Urbana, Ill.: University of Illinois Library School, 1949.
MLA-referens (8:e uppl.)University of Illinois (Urbana-Champaign campus). Library School. Occasional Papers. University of Illinois Library School, 1949.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.