Collis, D. J. (1998). Corporate Strategy A Resource-based Approach David J. Collis, Cynthia A. Montgomery. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Collis, David J. Corporate Strategy A Resource-based Approach David J. Collis, Cynthia A. Montgomery. McGraw-Hill, 1998.
Lua MLA (8ú heag.)Collis, David J. Corporate Strategy A Resource-based Approach David J. Collis, Cynthia A. Montgomery. McGraw-Hill, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.