Cita APA (7a ed.)
Children's Better Health Institute. U.S. kids. Field Publications.
Cita Chicago Style (17a ed.)
Children's Better Health Institute. U.S. Kids. Middletown, CT: Field Publications.
Cita MLA (9a ed.)
Children's Better Health Institute. U.S. Kids. Field Publications.
Precaución: Estas citas no son 100% exactas.