Não informado. (1969). International Journal of Early Childhood. World Organization for Early Childwood Education.
Citação do estilo Chicago (17ª ed.)Não informado. International Journal of Early Childhood. Dublin: World Organization for Early Childwood Education, 1969.
Citação MLA (8ª ed.)Não informado. International Journal of Early Childhood. World Organization for Early Childwood Education, 1969.
警告：這些引文格式不一定是100％准確.