APA (7th ed.) Citation

Steffen, A., & Gore, A. (2008). Worldchanging : a user's guide for the 21st century / edited by Alex Steffen ; foreword by Al Gore ; design by Sagmeister Inc: A user's guide for the 21st century. Abrams.

Chicago Style (17th ed.) Citation

Steffen, Alex, and Albert Gore. Worldchanging : A User's Guide for the 21st Century / Edited by Alex Steffen ; Foreword by Al Gore ; Design by Sagmeister Inc: A User's Guide for the 21st Century. New York: Abrams, 2008.

MLA (9th ed.) Citation

Steffen, Alex, and Albert Gore. Worldchanging : A User's Guide for the 21st Century / Edited by Alex Steffen ; Foreword by Al Gore ; Design by Sagmeister Inc: A User's Guide for the 21st Century. Abrams, 2008.

Warning: These citations may not always be 100% accurate.