Sources
| Source | ID | Link | Books | Overlap |
|---|---|---|---|---|
| GoodReads | 18148661 | not fetched yet | 1 | 1 (100%) |
| GoogleBooks | no author ID (search by name) | https://books.google.com/books?q=inauthor:%22Jasper%20Kerkau%22 | 0 | 0 |
| Amazon | no author ID (search by name) | https://www.amazon.com/s?i=stripbooks&rh=p_27%3AJasper%20Kerkau | 1 | 1 (100%) |
Most recent book on record
