this edition written and researched by Brandon Presser, Carolyn Bain, Fran Parnell this edition written and researched by Bradley Mayhew, Carolyn McCarthy this edition written and researched by Amy C. Balfour, Carolyn McCarthy, Greg Ward this edition written and researched by Paul Clammer, Brendan Sainsbury this edition written and researched by Simon Richmond, Lucy Corne this edition written and researched by Carolyn Bain, Cristian Bonetto. this edition written and researched by Alison Bing, Paula Hardy. this edition written and researched by Carolyn Bain, Alexis Averbuck this edition written and researched by Damian Harper, Dai Min this edition written and researched by Jenny Walker, Paul Clammer