OBryan Pat. (2007). Your Portable Empire: How to Make Money Anywhere While Doing What You Love. New Jersey: Wiley.
Trích dẫn kiểu ChicagoOBryan Pat. Your Portable Empire: How to Make Money Anywhere While Doing What You Love. New Jersey: Wiley, 2007.
MLA citiranjeOBryan Pat. Your Portable Empire: How to Make Money Anywhere While Doing What You Love. New Jersey: Wiley, 2007.
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