Não informado. (1980). Nursing & Health Care. National League for Nursing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Nursing & Health Care. New York: National League for Nursing, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Nursing & Health Care. National League for Nursing, 1980.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.