Não informado. (1964). Scientia paedagogica experimentalis. Centre for Experimental Educational Research.
Lua i Stíl Chicago (17ú heag.)Não informado. Scientia Paedagogica Experimentalis. Gent, Belgica: Centre for Experimental Educational Research, 1964.
Lua MLA (8ú heag.)Não informado. Scientia Paedagogica Experimentalis. Centre for Experimental Educational Research, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.