El-Takli, I., O’Brien, P., & Paterson, W. Clinical Diagnosis of Achalasia: How Reliable is the Barium X-Ray? Wiley.
Chicago Style (17th ed.) CitationEl-Takli, I., P. O’Brien, and WG Paterson. Clinical Diagnosis of Achalasia: How Reliable Is the Barium X-Ray? Wiley.
MLA (9th ed.) CitationEl-Takli, I., et al. Clinical Diagnosis of Achalasia: How Reliable Is the Barium X-Ray? Wiley.
Warning: These citations may not always be 100% accurate.