MLA

Ratto, Carlo, et al. Anal Fistula and Abscess. Cham: Springer International Publishing AG, 2022.

APA

Ratto, C., Campennì, P., De Simone, V., Litta, F., & Parello, A. (2022). Anal Fistula and Abscess. Cham: Springer International Publishing AG.

Chicago

Ratto, Carlo., Paola Campennì, Veronica De Simone, Francesco Litta, and Angelo Parello. Anal Fistula and Abscess. Cham: Springer International Publishing AG, 2022.