Baumgartner, E. (2004), L’osservazione del comportamento infantile. Teorie e strumenti, Carocci, Roma.
Bortolotti A., Ceciliani A. (2007), Gioco spontaneo e cure educative, in: Contini M. G., Manini M. (a cura di), Le cure educative, Carocci, Roma.
Brian L. (2005), “Playground Exploration: an opportunity for incidental learning of mechanical principles”, in Teaching Elementary Physical Education, v16 n2 p21-24 March.
Coplan R, Wichmann C, Lagace-Seguin D (2001) “Solitary-Active Play Behavior. A Marker Variable for Maladjustment in the Preschool?”, Journal of Research in Childhood Education, 15(2) 164-172.
Hurwitz SC. (2002) “To be successful: let them play! “Child Education, 79:101–102.
Kern P., Wakeford L. (2007), “ Supporting Outdoor Play for Young Children: The Zone model of Playground”, Young Children, v.62 n5 p 12-18 September.
Parlebas, P. (1997), Giochi e sport. Corpo, comunicazione e creatività ludica, il Capitello, Torino.
Pellegrini AD, Smith PK. (1998) “The development of play during childhood: forms and possible functions”. Child Psychology Psychiatry Rev.;3:51–57.
Smith D. (1995) “How play influences children’s development at home and school.” in Journal of Physical Education Recreation Dance.;66:19–23.
Stremmler, A. J., Sluss. D. G. (2004) “Play Peers Interaction”, in Journal of Research in Childhood Education; 18, 4, pp. 293.
Tsao L. (2002) “How much do we know about the importance of play in child development?” in Childhood Education 78:230–233.