APA (7th ed.) Citation

ML, B., HT, H., M, A., A, C., SR, P., & MR, A. (2009). Perforation upon retroflexion: An endoscopic complication and repair. Endoscopy, 41(2), E155. https://doi.org/10.1055/s-0029-1214705

Chicago Style (17th ed.) Citation

ML, Bechtold, Hammad HT, Arif M, Choudhary A, Puli SR, and Antillon MR. "Perforation upon Retroflexion: An Endoscopic Complication and Repair." Endoscopy 41, no. 2 (2009): E155. https://doi.org/10.1055/s-0029-1214705.

MLA (9th ed.) Citation

ML, Bechtold, et al. "Perforation upon Retroflexion: An Endoscopic Complication and Repair." Endoscopy, vol. 41, no. 2, 2009, p. E155, https://doi.org/10.1055/s-0029-1214705.