Παραπομπή σε μορφή APA (7η εκδ.)

Virtanen, V. S. (1949). Tonsillectomy as treatment of acute peritonsillitis: With clinical and statistical observations.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Virtanen, Veli Seppo. Tonsillectomy as Treatment of Acute Peritonsillitis: With Clinical and Statistical Observations. Helsinki, 1949.

Παραπομπή σε μορφή MLA (8th εκδ.)

Virtanen, Veli Seppo. Tonsillectomy as Treatment of Acute Peritonsillitis: With Clinical and Statistical Observations. 1949.