Não informado. (1991). Research Evaluation. Beech Tree Publishing.
Style de citation Chicago (17e éd.)Não informado. Research Evaluation. Guildford, Inglaterra: Beech Tree Publishing, 1991.
Style de citation MLA (8e éd.)Não informado. Research Evaluation. Beech Tree Publishing, 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.