[1]
M. Garaigordobil Landazábal, “Assessment of a cooperative-creative program of assertive behavior and self-concept”., Span. j. psychol., vol. 2, p. 3, Jan. 1999, Accessed: Mar. 10, 2026. Available: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP9999110003A