APA (7th ed.) Citation

Gonçalves, P., Caetano, A., & Ferreira, A. (2013). A rare cause of abdominal pain.

Chicago Style (17th ed.) Citation

Gonçalves, PM, AC Caetano, and A. Ferreira. A Rare Cause of Abdominal Pain. 2013.

MLA (8th ed.) Citation

Gonçalves, PM, et al. A Rare Cause of Abdominal Pain. 2013.

Warning: These citations may not always be 100% accurate.