APA (7th ed.) Citation

Butler, R. (1990). The Effects of Mastery and Competitive Conditions on Self-Assessment at Different Ages. Child Development, 61(1), 201.

Chicago Style (17th ed.) Citation

Butler, Ruth. "The Effects of Mastery and Competitive Conditions on Self-Assessment at Different Ages." Child Development 61, no. 1 (1990): 201.

MLA (9th ed.) Citation

Butler, Ruth. "The Effects of Mastery and Competitive Conditions on Self-Assessment at Different Ages." Child Development, vol. 61, no. 1, 1990, p. 201.