APA (7e ed.) Bronvermelding

Kelly, I., Frith, P., Hyman, N., & Jewell, D. (1990). Retinal periphlebitis in ulcerative colitis. BMJ Publishing Group.

Chicago (17e ed.) Bronvermelding

Kelly, I., P. Frith, N. Hyman, en D. Jewell. Retinal Periphlebitis in Ulcerative Colitis. BMJ Publishing Group, 1990.

MLA (9e ed.) Bronvermelding

Kelly, I., et al. Retinal Periphlebitis in Ulcerative Colitis. BMJ Publishing Group, 1990.