Cita APA

 Watkins, M. (2013).  The first 90 days: Proven strategies for getting up to speed faster and smarter.  Harvard Business Review Press.

Chicago Style Citation

 Watkins, Michael.  The First 90 Days: Proven Strategies for Getting Up to Speed Faster and Smarter.  Harvard Business Review Press, 2013.

Cita MLA

 Watkins, Michael.  The First 90 Days: Proven Strategies for Getting Up to Speed Faster and Smarter.  Harvard Business Review Press, 2013.