Cita APA (7a ed.)

Mason, J., Dixon, F., Grimes, H., & Jones, G. (2016). Pyopericardium secondary to achalasia-associated squamous cell carcinoma of the oesophagus. Royal College of Surgeons of England.

Cita Chicago Style (17a ed.)

Mason, J., F. Dixon, H. Grimes, y G. Jones. Pyopericardium Secondary to Achalasia-associated Squamous Cell Carcinoma of the Oesophagus. Royal College of Surgeons of England, 2016.

Cita MLA (9a ed.)

Mason, J., et al. Pyopericardium Secondary to Achalasia-associated Squamous Cell Carcinoma of the Oesophagus. Royal College of Surgeons of England, 2016.