APA (7th ed.) Citation

Vantrappen, G., Janssens, J., & Rutgeerts, P. Treatment of Achalasia: Pneumatic Dilation. Wiley.

Chicago Style (17th ed.) Citation

Vantrappen, G., J. Janssens, and P. Rutgeerts. Treatment of Achalasia: Pneumatic Dilation. Wiley.

MLA (9th ed.) Citation

Vantrappen, G., et al. Treatment of Achalasia: Pneumatic Dilation. Wiley.