Gaya APA

Watkins, M, D. (2013). The First 90 Days : Proven Strategis for Getting Up to Speed Faster and Smarter . United States of America: Harvard Business Review Press.

Gaya MLA

Watkins, Michael, D.. "The First 90 Days : Proven Strategis for Getting Up to Speed Faster and Smarter". United States of America: Harvard Business Review Press, 2013. Text.