APA (7th ed.) Citation
Hess, T., & Ennis, G. (2013). Age differences in the effort and costs associated with cognitive activity.
Chicago Style (17th ed.) Citation
Hess, T.M, and G.E Ennis. Age Differences in the Effort and Costs Associated with Cognitive Activity. 2013.
MLA (9th ed.) Citation
Hess, T.M, and G.E Ennis. Age Differences in the Effort and Costs Associated with Cognitive Activity. 2013.
Warning: These citations may not always be 100% accurate.