Não informado. (1973). California Journal of Teacher Education. California Council on the Education of Teachers.
Citação do estilo Chicago (17ª ed.)Não informado. California Journal of Teacher Education. Fullerton, Calif: California Council on the Education of Teachers, 1973.
Citação MLA (8ª ed.)Não informado. California Journal of Teacher Education. California Council on the Education of Teachers, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.