Cita APA (7th ed.)

O'Donnell, L., Arvind, A., Hoang, P., Cameron, D., Talbot, I., Jewell, D., . . . Farthing, M. (1992). Double blind, controlled trial of 4-aminosalicylic acid and prednisolone enemas in distal ulcerative colitis. BMJ Publishing Group.

Cita Chicago (17th ed.)

O'Donnell, L., A. Arvind, P. Hoang, D. Cameron, I. Talbot, D. Jewell, J. Lennard-Jones, i M. Farthing. Double Blind, Controlled Trial of 4-aminosalicylic Acid and Prednisolone Enemas in Distal Ulcerative Colitis. BMJ Publishing Group, 1992.

Cita MLA (9th ed.)

O'Donnell, L., et al. Double Blind, Controlled Trial of 4-aminosalicylic Acid and Prednisolone Enemas in Distal Ulcerative Colitis. BMJ Publishing Group, 1992.