Citazione Stile APA (7a Edizione)

Björnsson, E., Simren, M., Olsson, R., & Chapman, R. (2004). Fatigue in patients with primary sclerosing cholangitis.

Citazione stile Chigago Style (17a edizione)

Björnsson, E., M. Simren, R. Olsson, e R. Chapman. Fatigue in Patients with Primary Sclerosing Cholangitis. 2004.

Citatione MLA (9a ed.)

Björnsson, E., et al. Fatigue in Patients with Primary Sclerosing Cholangitis. 2004.