KUSWOYO; TENTAMA, Fatwa; MUHOPILAH, Pipih. Altruism Scale: A Psychometric Study for Junior High School Student. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 51, n. 2, p. 208–219, 2020. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/10818. Acesso em: 12 sep. 2025.