Não informado. (1980). Yearbook of orthopedics. Year Book Medical Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Yearbook of Orthopedics. Chicago, Ill: Year Book Medical Publishers, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Yearbook of Orthopedics. Year Book Medical Publishers, 1980.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.