APA (7th ed.) Citation

Tanner, D. E., Johnson, G. R., & Willson, V. L. (1984). The impact on student achievement of independently manipulating abstractness-concreteness and cognitive level in test items.

Chicago Style (17th ed.) Citation

Tanner, David Earl, Glenn R. Johnson, and Victor L. Willson. The Impact on Student Achievement of Independently Manipulating Abstractness-concreteness and Cognitive Level in Test Items. 1984.

MLA (9th ed.) Citation

Tanner, David Earl, et al. The Impact on Student Achievement of Independently Manipulating Abstractness-concreteness and Cognitive Level in Test Items. 1984.