James Q. Wilson, Bureaucracy: What Government Agencies Do and Why They Do It (Basic Books, 1989, 1991, 1992, 1993, 1995, 1997, 2000, 2001, 2006).

“Many of us consider Bureaucracy to be Wilson’s most important book. It is without doubt the greatest book on bureaucracy written by an American, and the greatest book on American bureaucracy written by anybody.”
R. Shep Melnick (2012)

Online:
Google Books