Hughes, F. P. (1999). Children, play, and development (Third edition.). Allyn and Bacon.
Chicago-Zitierstil (17. Ausg.)Hughes, Fergus P. Children, Play, and Development. Third edition. Boston: Allyn and Bacon, 1999.
MLA-Zitierstil (8. Ausg.)Hughes, Fergus P. Children, Play, and Development. Third edition. Allyn and Bacon, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.