Author: John B Gillingham. Contributor: John B Gillingham (Edited by), Emily Albu (Contributions by), Ewan Johnson (Contributions by), Hanna Vollrath (Contributions by), Jenny Benham (Contributions by), Jörg Peltzer (Contributions by), Julie Barrau (Contributions by), Lucy Marten (Contributions by), Mia Münster-Swendsen (Contributions by), Naomi Sykes (Contributions by), Richard Barton (Contributions by), John D Cotts (Contributions by), Graham A Loud (Contributions by).