Não informado. (1967). Journal of Educational Thought. University of Calgary, Faculty of Education.
Citação do estilo Chicago (17ª ed.)Não informado. Journal of Educational Thought. Calgary, Canada: University of Calgary, Faculty of Education, 1967.
Citação MLA (8ª ed.)Não informado. Journal of Educational Thought. University of Calgary, Faculty of Education, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.