APA način citiranja

Kelley, K. A., Kaur, T., & Tsikitis, V. L. (2017). Perianal Crohn’s disease: Challenges and solutions. Clin Exp Gastroenterol.

Čikaški stil citiranja

Kelley, Katherine A., Taranjeet Kaur, i Vassiliki L. Tsikitis. "Perianal Crohn’s Disease: Challenges and Solutions." Clin Exp Gastroenterol 2017.

MLA način citiranja

Kelley, Katherine A., Taranjeet Kaur, i Vassiliki L. Tsikitis. "Perianal Crohn’s Disease: Challenges and Solutions." Clin Exp Gastroenterol 2017.