Cite
Piaget’s water-level tasks: Performance across the lifespan with emphasis on the elderly
MLA
Tran, Ulrich S., and Anton K. Formann. “Piaget’s Water-Level Tasks: Performance across the Lifespan with Emphasis on the Elderly.” Personality & Individual Differences, vol. 45, no. 3, Aug. 2008, pp. 232–37. EBSCOhost, https://doi.org/10.1016/j.paid.2008.04.004.
APA
Tran, U. S., & Formann, A. K. (2008). Piaget’s water-level tasks: Performance across the lifespan with emphasis on the elderly. Personality & Individual Differences, 45(3), 232–237. https://doi.org/10.1016/j.paid.2008.04.004
Chicago
Tran, Ulrich S., and Anton K. Formann. 2008. “Piaget’s Water-Level Tasks: Performance across the Lifespan with Emphasis on the Elderly.” Personality & Individual Differences 45 (3): 232–37. doi:10.1016/j.paid.2008.04.004.