this edition written and researched by Amy C Balfour ...[et al.] this edition written and researched by Amy Balfour...[et al.] this edition written and researched by Damian Harper...[et al.] this edition written and researched by Sandra Bao ...[et al.] this edition written and researched by Emilie Filou ... [et al.]. this edition written and researched by Emilie Filou...[et al.] this edition written and researched by Jenny Walker... [et al.] this edition written and researched by Mark Baker ...[et al.] this edition written and researched by Paul Clammer ...[et al.] this edition written and researched by Marc Di Duca...[et al.]