Não informado. (1962). Theory into practice. Ohio State University, Bureau of Educational Research and Service.
Lua i Stíl Chicago (17ú heag.)Não informado. Theory into Practice. Columbus, Ohio: Ohio State University, Bureau of Educational Research and Service, 1962.
Lua MLA (8ú heag.)Não informado. Theory into Practice. Ohio State University, Bureau of Educational Research and Service, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.