Não informado. (1982). Gifted Education International. A B Academic Publishers.
Chicago (17e ed.) BronvermeldingNão informado. Gifted Education International. Herts, Inglaterra: A B Academic Publishers, 1982.
MLA (8e ed.) BronvermeldingNão informado. Gifted Education International. A B Academic Publishers, 1982.
Let op: Deze citaties zijn niet altijd 100% accuraat.