Citação norma APA

 Wright, J. V. (2009).  Your stomach: What is really making you miserable and what to do about it.  Praktikos.

Citação norma Chicago

 Wright, Jonathan V.  Your Stomach: What Is Really Making You Miserable and What to Do About It.  Praktikos, 2009.

Citação norma MLA

 Wright, Jonathan V.  Your Stomach: What Is Really Making You Miserable and What to Do About It.  Praktikos, 2009.

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