APA (7th ed.) Citation

Hoekstra, E., Voorn, M. v. d., & Keunen, R. Inability to walk: A rare presentation of Crohn’s disease. BMJ Publishing Group.

Chicago Style (17th ed.) Citation

Hoekstra, Elmer, Michael van der Voorn, and Rudolf Keunen. Inability to Walk: A Rare Presentation of Crohn’s Disease. BMJ Publishing Group.

MLA (9th ed.) Citation

Hoekstra, Elmer, et al. Inability to Walk: A Rare Presentation of Crohn’s Disease. BMJ Publishing Group.