APA (7e ed.) Bronvermelding

Zero to Three (Organization) & National Center for Clinical Infant Programs (U.S.). Zero to three. National Center for Clinical Infant Programs.

Chicago (17e ed.) Bronvermelding

Zero to Three (Organization) en National Center for Clinical Infant Programs (U.S.). Zero to Three. Washington, D.C.: National Center for Clinical Infant Programs.

MLA (9e ed.) Bronvermelding

Zero to Three (Organization) en National Center for Clinical Infant Programs (U.S.). Zero to Three. National Center for Clinical Infant Programs.