APA (7e ed.) Bronvermelding

Não informado. (1969). International Journal of Early Childhood. World Organization for Early Childwood Education.

Chicago (17e ed.) Bronvermelding

Não informado. International Journal of Early Childhood. Dublin: World Organization for Early Childwood Education, 1969.

MLA (8e ed.) Bronvermelding

Não informado. International Journal of Early Childhood. World Organization for Early Childwood Education, 1969.

Let op: Deze citaties zijn niet altijd 100% accuraat.