Pappas, T. N., & Padussis, J. (2010). Surgery: Achalasia and Esophageal Cancer. In GI/Liver Secrets Plus: Fourth Edition (pp. 559–562). https://doi.org/10.1016/B978-0-323-06397-5.00075-7

Pappas, T. N., and J. Padussis. “Surgery: Achalasia and Esophageal Cancer.” In GI/Liver Secrets Plus: Fourth Edition, 559–62, 2010. https://doi.org/10.1016/B978-0-323-06397-5.00075-7.

Pappas TN, Padussis J. Surgery: Achalasia and Esophageal Cancer. In: GI/Liver Secrets Plus: Fourth Edition. 2010. p. 559–62.

Pappas, T. N., and J. Padussis. “Surgery: Achalasia and Esophageal Cancer.” GI/Liver Secrets Plus: Fourth Edition, 2010, pp. 559–62. Scopus, doi:10.1016/B978-0-323-06397-5.00075-7.

Pappas TN, Padussis J. Surgery: Achalasia and Esophageal Cancer. GI/Liver Secrets Plus: Fourth Edition. 2010. p. 559–562.