Iowa. State Board of Regents. (1956). Report of the State Board of Regents for the biennial period ending ... State of Iowa.
Lua i Stíl Chicago (17ú heag.)Iowa. State Board of Regents. Report of the State Board of Regents for the Biennial Period Ending ... Des Moines: State of Iowa, 1956.
Lua MLA (8ú heag.)Iowa. State Board of Regents. Report of the State Board of Regents for the Biennial Period Ending ... State of Iowa, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.