Não informado. (1969). International Journal of Early Childhood. World Organization for Early Childwood Education.
Citace podle Chicago (17th ed.)Não informado. International Journal of Early Childhood. Dublin: World Organization for Early Childwood Education, 1969.
Citace podle MLA (8th ed.)Não informado. International Journal of Early Childhood. World Organization for Early Childwood Education, 1969.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..