Lissitz, R. W. (2009). The concept of validity: Revisions, new directions, and applications. Information Age Pub..
Cita Chicago Style (17a ed.)Lissitz, Robert W. The Concept of Validity: Revisions, New Directions, and Applications. Charlotte, NC: Information Age Pub., 2009.
Cita MLA (8a ed.)Lissitz, Robert W. The Concept of Validity: Revisions, New Directions, and Applications. Information Age Pub., 2009.
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