From this source only:
Simon, H.A. (1997). Administrative Behavior: A Study of Decision-Making Processes in Administrative Organizations (4th Ed) New York, NY: Free Press. ISBN-13: 978-0-684-83582-2.

A two page, three paragraph memo:
• discuss how decisions are made (or not made) in an organization
• the main factors preventing or delaying change
• and the effect of change has on employees.

Must be very concise and from the book only. When citing in the memo must include page number with the cite info as well.