Não informado. (1968). Measurement and Evaluation in Guidance. Association for Measurement and Evaluation in Guidance.
Citação do estilo Chicago (17ª ed.)Não informado. Measurement and Evaluation in Guidance. Alexandria, Va: Association for Measurement and Evaluation in Guidance, 1968.
Citação MLA (8ª ed.)Não informado. Measurement and Evaluation in Guidance. Association for Measurement and Evaluation in Guidance, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.