Não informado. (1963). Education abstracts. American College Public Relations Association.
Style de citation Chicago (17e éd.)Não informado. Education Abstracts. Washington: American College Public Relations Association, 1963.
Style de citation MLA (8e éd.)Não informado. Education Abstracts. American College Public Relations Association, 1963.
Attention : ces citations peuvent ne pas être correctes à 100%.