Two publications which you should consider browsing regularly are Sport Business Daily and Sport Business Journal, both from Street & Smith. Follow the links bellow. You can browse through the most recent ten issues and search for older items.
Google Scholar is a free online resource which will allow you to quickly search hundreds of thousands of academic citations to articles, books, and more. Check full text access through Journal titles A-Z or order the items you find through Interlibrary Loan.