Não informado. (2010). Northwest Medicine. Northwest Medical Publishing Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Northwest Medicine. Seattle, Wash: Northwest Medical Publishing Association, 2010.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Northwest Medicine. Northwest Medical Publishing Association, 2010.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.