| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| English for business communication | 978-88-7534-072-8 (88-7534-072-2) | 2012 |
| English for business communication | 978-88-7534-046-9 (88-7534-046-3) | 2010 |
W G · Walter Gardini · Walter Gerten · Walter Gordon · Walter Grottenthaler · Walter Grottian