Software Sourcing in the Age of Open: Leveraging the Unknown Workforce by: Ågerfalk, Pär J.; Fitzgerald, Brian; Stol, Klaas-Jan Publisher: Springer International Publishing(2015/4/21) Language: English ISBN-10: 3319172654 ISBN-13: 9783319172651 e-ISBN-10: 3319172662 e-ISBN-13: 9783319172668