MLA

Oliveira. Anorectal Physiology: A Clinical and Surgical Perspective. Springer International Publishing, 2020.

APA

Oliveira, O. (2020). Anorectal Physiology: A Clinical and Surgical Perspective. Springer International Publishing.

Chicago

Oliveira Anorectal Physiology: A Clinical and Surgical Perspective. : Springer International Publishing, 2020.