APA

Committee on Standards of Child Health Care, .Standars of child health care. Estados Unidos: American Academy of Pediatrics.

Chicago

Committee on Standards of Child Health Care, .Standars of child health care. Estados Unidos: American Academy of Pediatrics.

Harvard

Committee on Standards of Child Health Care, .Standars of child health care. Estados Unidos: American Academy of Pediatrics.

MLA

Committee on Standards of Child Health Care, .Estados Unidos: American Academy of Pediatrics. .