O''Bryan, P. (2007). Your portable empire: How to make money anywhere while doing what you love. John Wiley & Sons, Inc.
استشهاد بنمط شيكاغوO''Bryan, Pat. Your Portable Empire: How to Make Money Anywhere While Doing What You Love. John Wiley & Sons, Inc, 2007.
MLA استشهادO''Bryan, Pat. Your Portable Empire: How to Make Money Anywhere While Doing What You Love. John Wiley & Sons, Inc, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.