Gaya APA

Elkington, J., Zeitz, J. (2014). The Break-Through Challenge: 10 Ways to Connect Today's Profits with Tomorrow's Bottom Line (Ed.1). United Stated of America: Jossey-Bass.

Gaya MLA

Elkington, John., Zeitz, Jochen. "The Break-Through Challenge: 10 Ways to Connect Today's Profits with Tomorrow's Bottom Line". Ed.1 United Stated of America: Jossey-Bass, 2014. Text.