Citazione Stile APA (7a Edizione)

Barr, G., Shale, D., & Jewell, D. (1986). Ulcerative colitis and sarcoidosis. BMJ Publishing Group.

Citazione stile Chigago Style (17a edizione)

Barr, G., D. Shale, e D. Jewell. Ulcerative Colitis and Sarcoidosis. BMJ Publishing Group, 1986.

Citatione MLA (9a ed.)

Barr, G., et al. Ulcerative Colitis and Sarcoidosis. BMJ Publishing Group, 1986.