Hodder & Stoughton · McGraw-Hill
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| 50 Ways to Improve Your Portuguese: A Teach Yourself Guide | 978-0-07-177353-9 | 2011 | Manuela Cook |
| 50 Ways to Improve your Portuguese: Teach Yourself | 978-1-4441-3231-1 | 2012 | |
| 50 Ways To Improve Your Portuguese: Teach Yourself | 978-1-4441-1067-8 | 2011 | Manuela Cook |
| 50 Ways to Improve Your Portuguese: Teach Yourself: Teach Yourself | 978-1-4441-2770-6 | 2011 | |