Recommended Reading
Introductory
"Agile Software Development" by A.Cockburn
"Extreme Programming Explained" 2nd ed by K.Beck, C.Andres
"Agile and Iterative Development" by C.Larman
"Agile Software Development with Scrum" by K.Schwaber,M.Beedle
"Lean Software Development" by Mary & Tom Poppendieck
Technical
"Working Effectively with Legacy Code" by M.Feathers
"Refactoring To Patterns" by J.Kerievsky
"JUnit Recipes" by J.B.Rainsberger
"Test Driven Development" by D.Astels
"Domain Driven Design" by E.Evans
"Object Design" by R.Wirfs-Brock,A.McKean
Requirements
"User Stories Applied" by Mike Cohn
"Requirements by Collaboration" by E.Gottesdiener
"Writing Effective Use Cases" by A.Cockburn
"Social Life of Information" by J.Seely Brown, P.Duguid
"Are Your Lights On?" by G.Weinberg,Gause
"Serious Play" by M.Schrage
Management
"Slack" by T.DeMarco
"Fearless Change" by L.Rising, M.Manns
"Lean Thinking" by J.Womack, D.Jones
"Waltzing with Bears" by T.DeMarco, T.Lister
"Cultivating Communities of Practice" by E.Wenger et al
"Artful Making" by R.Austin, L.Devin
"Surviving Object-Oriented Projects" by A.Cockburn
"Punished by Rewards" by A.Kohn
"The Myth of the Paperless Office" by A.Sellen, R.Harper
"The Fifth Discipline" by P.Senge
"Agile Software Development in the Large" by J.Eckstein
Facilitation
"Facilitators Guide to Participatory Decision Making" by S.Kaner
"Project Retrospectives" by N.Kerth
"The Skilled Facilitator" by R.Schwarz
"Nonviolent Communication" by M.B. Rosenberg
"The Art of Focused Conversation" by R.B.Stanfield
"GroupThink" by I.Janis