| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Web Survey Methodology | Digital | 978-1-4739-2730-8 (1-4739-2730-7) | 2015 | Mario Callegaro · Katja Lozar Manfreda |
| Web Survey Methodology | Hardcover | 978-0-85702-860-0 (0-85702-860-X) | 2014 | Mario Callegaro · Katja Lozar Manfreda |
| Web Survey Methodology | Paperback | 978-0-85702-861-7 (0-85702-861-8) | 2014 | Mario Callegaro · Katja Lozar Manfreda |