Não informado. (1955). Scientia paedagogica. International Secretariat for Teaching Educational Sciences in Universities.
Chicagoスタイル(17版)引用形式Não informado. Scientia Paedagogica. Gent, Belgica: International Secretariat for Teaching Educational Sciences in Universities, 1955.
MLA(8版)引用形式Não informado. Scientia Paedagogica. International Secretariat for Teaching Educational Sciences in Universities, 1955.
警告: この引用は必ずしも正確ではありません.