Gaya APA

Collis, D, J., Montgomery, C, A. (2007). Corporate strategy a resource based approach (Edisi Kedua). New York: McGraw-Hill.

Gaya MLA

Collis, David, J.., Montgomery, Cynthia, A.. "Corporate strategy a resource based approach". Edisi Kedua New York: McGraw-Hill, 2007. Text.