Citação norma APA

Fletcher, J., Wirz, A., Henry, E., & McColl, K. E. L. (2004). Studies of acid exposure immediately above the gastro-oesophageal squamocolumnar junction: Evidence of short segment reflux. Copyright 2004 by Gut.

Citação norma Chicago

Fletcher, J., A. Wirz, E. Henry, and K E L. McColl. Studies of Acid Exposure Immediately Above the Gastro-oesophageal Squamocolumnar Junction: Evidence of Short Segment Reflux. Copyright 2004 by Gut, 2004.

Citação norma MLA

Fletcher, J., A. Wirz, E. Henry, and K E L. McColl. Studies of Acid Exposure Immediately Above the Gastro-oesophageal Squamocolumnar Junction: Evidence of Short Segment Reflux. Copyright 2004 by Gut, 2004.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.