APA (7th ed.) Citation

Ribeiro, C., Nogueira, F., Guerreiro, S., & Leão, P. (2015). Deep infiltrating endometriosis of the colon causing cyclic bleeding.

Chicago Style (17th ed.) Citation

Ribeiro, C., F. Nogueira, SC Guerreiro, and P. Leão. Deep Infiltrating Endometriosis of the Colon Causing Cyclic Bleeding. 2015.

MLA (9th ed.) Citation

Ribeiro, C., et al. Deep Infiltrating Endometriosis of the Colon Causing Cyclic Bleeding. 2015.