3 1 30 resources and the scope of the firm Collis, David J. Primary Author Montgomery, Cynthia A. Primary Author mixed material 0256178941 Chicago Irwin 1997 Corporate+Strategy.jpg a resource-based approach Collis, David J. Primary Author Montgomery, Cynthia A. Primary Author mixed material 007124932X Boston McGraw-Hill 2005 corporate+strategy+by+collis+--+2nd.jpg a resource-based approach, 2nded. Collis, David J. Primary Author Montgomery, Cynthia A. Primary Author mixed material #N/A Boston McGraw-Hill 2005 %5CImages%5Ccorporate+strategy+by+collis+--+2nd.jpg