Cita APA (7a ed.)
Ortwein, J., de Laffolie, J., & Zimmer, K. (2017). The Cobblestone Sign in a Child with Crohn's Disease. Deutsches Ärzteblatt International, 114(27/28), 472.
Cita Chicago Style (17a ed.)
Ortwein, Julia, Jan de Laffolie, y Klaus-Peter Zimmer. "The Cobblestone Sign in a Child with Crohn's Disease." Deutsches Ärzteblatt International 114, no. 27/28 (2017): 472.
Cita MLA (9a ed.)
Ortwein, Julia, et al. "The Cobblestone Sign in a Child with Crohn's Disease." Deutsches Ärzteblatt International, vol. 114, no. 27/28, 2017, p. 472.
Precaución: Estas citas no son 100% exactas.