Gill Hale · Gill Howell · Gill / Metcalf, Robert Holley
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Gateway B2 Workbook | 978-0-230-47097-2 (0-230-47097-1) | 2016 | Frances Treloar |
| Real Life Global Advanced Teacher's Handbook | 978-1-4058-9713-6 (1-4058-9713-9) | 2012 | |
| Real Life Global Upper Intermediate Teacher's Handbook | 978-1-4058-9717-4 (1-4058-9717-1) | 2011 | |