Citazione APA

Heading, R. C. (2003). Barrett’s oesophagus: Epidemiology comes up with a surprise. Copyright 2003 by Gut.

Stile di citazione Chicago

Heading, R C. Barrett’s Oesophagus: Epidemiology Comes Up With a Surprise. Copyright 2003 by Gut, 2003.

Citazione MLA

Heading, R C. Barrett’s Oesophagus: Epidemiology Comes Up With a Surprise. Copyright 2003 by Gut, 2003.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.