Gaya APA

Wheelen, T, L., Hunger, J, D. (2010). Concepts in Strategic Management and Business Policy: Achieving Sustaninability (12). Canada: Pearson International.

Gaya MLA

Wheelen, Thomas, L.., Hunger, J., David. "Concepts in Strategic Management and Business Policy: Achieving Sustaninability". 12 Canada: Pearson International, 2010. Text.