Wanjira, K., и B. Wanjiru. «Interrelation Between Cognitive Development and Personality Traits Among Adolescent Boys: A Study in Public Day Secondary Schools in Kirinyaga East Sub‑County, Keny»a. Russian Journal of Education and Psychology, т. 16, вып. 5, Oct. 2025, сс. 356-75, doi:10.12731/2658-4034-2025-16-5-831.