American Academy of Pediatrics. (2000). Pediatrics Nº 4. American Academy.
Cita Chicago (17th ed.)American Academy of Pediatrics. Pediatrics Nº 4. Barcelona: American Academy, 2000.
Cita MLA (9th ed.)American Academy of Pediatrics. Pediatrics Nº 4. American Academy, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.