Hughes, F. P. (1999). Children, play, and development (Third edition.). Allyn and Bacon.
Citazione stile Chigago Style (17a edizione)Hughes, Fergus P. Children, Play, and Development. Third edition. Boston: Allyn and Bacon, 1999.
Citatione MLA (8a ed.)Hughes, Fergus P. Children, Play, and Development. Third edition. Allyn and Bacon, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.