Não informado. Progress in Health Services. Health Information Foundation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Progress in Health Services. Chicago, Ill: Health Information Foundation.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Progress in Health Services. Health Information Foundation.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.