61HGGWf+fnL._UF1000,1000_QL80_.jpg。Amazon.com: The Portable MBA in Entrepreneurship。The portable MBA : Free Download, Borrow, and Streaming。4132OjkuNCL._UF350,350_QL80_.jpg。。William D. BygraveThe Portable MBA in Enterpeneurship 4th Edition With The Portable MBA in Enterpeneurship Case Studies (Portable MBA Series)英語版