Labus, J. S., Bolus, R., Chang, L., Wiklund, I., Naesdal, J., Mayer, E. A., & Naliboff, B. D. (2004). The Visceral Sensitivity Index: Development and validation of a gastrointestinal symptom-specific anxiety scale. Alimentary Pharmacology & Therapeutics, 20(1), 89. https://doi.org/10.1111/j.1365-2036.2004.02007.x
Chicago Style (17th ed.) CitationLabus, J. S., R. Bolus, L. Chang, I. Wiklund, J. Naesdal, E. A. Mayer, and B. D. Naliboff. "The Visceral Sensitivity Index: Development and Validation of a Gastrointestinal Symptom-specific Anxiety Scale." Alimentary Pharmacology & Therapeutics 20, no. 1 (2004): 89. https://doi.org/10.1111/j.1365-2036.2004.02007.x.
MLA (9th ed.) CitationLabus, J. S., et al. "The Visceral Sensitivity Index: Development and Validation of a Gastrointestinal Symptom-specific Anxiety Scale." Alimentary Pharmacology & Therapeutics, vol. 20, no. 1, 2004, p. 89, https://doi.org/10.1111/j.1365-2036.2004.02007.x.