Não informado. (1956). Dental journal. University of Pittsburgh, School of Dentistry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Dental Journal. Pittsburgh, Pa: University of Pittsburgh, School of Dentistry, 1956.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Dental Journal. University of Pittsburgh, School of Dentistry, 1956.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.