Παραπομπή σε μορφή APA (7η εκδ.)

Boberg, K., Bergquist, A., Mitchell, S., Pares, A., Rosina, F., Broomé, U., . . . Schrumpf, E. (2002). Cholangiocarcinoma in primary sclerosing cholangitis: Risk factors and clinical presentation.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Boberg, K., et al. Cholangiocarcinoma in Primary Sclerosing Cholangitis: Risk Factors and Clinical Presentation. 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

Boberg, K., et al. Cholangiocarcinoma in Primary Sclerosing Cholangitis: Risk Factors and Clinical Presentation. 2002.