Cita APA

 O''Bryan, P. (2007).  Your portable empire: How to make money anywhere while doing what you love.  John Wiley & Sons, Inc.

Citación estilo Chicago

 O''Bryan, Pat.  Your Portable Empire: How to Make Money Anywhere While Doing What You Love.  John Wiley & Sons, Inc, 2007.

Cita MLA

 O''Bryan, Pat.  Your Portable Empire: How to Make Money Anywhere While Doing What You Love.  John Wiley & Sons, Inc, 2007.

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