Zero to Three (Organization). (2008). Caring for infants & toddlers in groups: Developmentally appropriate practice (Second edition.). Zero to Three.
Chicago-viite (17. p.)Zero to Three (Organization). Caring for Infants & Toddlers in Groups: Developmentally Appropriate Practice. Second edition. Washington, D.C: Zero to Three, 2008.
MLA-viite (9. p.)Zero to Three (Organization). Caring for Infants & Toddlers in Groups: Developmentally Appropriate Practice. Second edition. Zero to Three, 2008.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.