APA (7th ed.) Citation
Balboa, O., Voelker, R., & Delgado, F. (1980). Manometry in esophageal achalasia.
Chicago Style (17th ed.) Citation
Balboa, Oscar, Ricardo Voelker, and Fernando Delgado. Manometry in Esophageal Achalasia. 1980.
MLA (9th ed.) Citation
Balboa, Oscar, et al. Manometry in Esophageal Achalasia. 1980.
Warning: These citations may not always be 100% accurate.