Colella, D., S. Bellantonio, C. D'Arando, and D. Monacis. “Interventions for the Promotion of Motor Activities in Primary School. Assessment of Motor Performance in Relation to Perceived Self-Efficacy and Enjoyment”. ITALIAN JOURNAL OF EDUCATIONAL RESEARCH, no. 25, Dec. 2020, pp. 49-62, doi:10.7346/SIRD-022020-P49.