Gaya APA

Gratton, L. (2014). The Key: How Corporations Succed by Solving the World's Toughest Problems . New York: Mc Graw Hill Education.

Gaya MLA

Gratton, Lynda. "The Key: How Corporations Succed by Solving the World's Toughest Problems". New York: Mc Graw Hill Education, 2014. Text.