Não informado. (1982). Gifted Education International. A B Academic Publishers.
Style de citation Chicago (17e éd.)Não informado. Gifted Education International. Herts, Inglaterra: A B Academic Publishers, 1982.
Style de citation MLA (8e éd.)Não informado. Gifted Education International. A B Academic Publishers, 1982.
Attention : ces citations peuvent ne pas être correctes à 100%.