Sources

New Directions on Agile Methods: A Comparative Analysis by Pekka Abrahamsson, Juhani Warsta, Mikko T. Siponen and Jussi Ronkainen, 2013 (Abrahamsson 2003)

Extreme Programming Explained, Second Edition by Kent Beck with Cynthia Andres, 2005 (Beck 2005)

Agile Software Development by Alistair Cockburn, 2002 (Cockburn 2002)

Crystal Clear: A Human-Powered Methodology for Small Teams by Alistair Cockburn, 2005 (Cockburn 2005)

Adaptive Software Development: A Collaborative Approach to Managing Complex Systems by Jim Highsmith, 2000 (Highsmith 2000)

https://agilemanifesto.org/history.html, 2001 (Highsmith 2001)

Agile Software Development Systems by Jom Highsmith, 2002 (Highsmith 2002)

Wild West to Agile: Adventures in Software Development Evolution and Revolution by Jim Highsmith, 2023 (Highsmith 2023)

Agile Development with Scrum by Ken Schwaber, Mike Beedle, 2002 (Schwaber 2002)

The Art of Agile Development (2nd Edition) by James Shore, 2022 (Shore 2022)

Scrum, The Art of Doing Twice the Work in Half the Time by Jeff Sutherland, 2014 (Sutherland 2014)

Agile Impressions, Gerald M. Weinberg, 2017 (Weinberg 2017)

http://www.extremeprogramming.org/, 1999 (Wells 1999)