Sources
| Source | ID | Link | Books | Overlap |
|---|---|---|---|---|
| GoodReads | 50236447 | not fetched yet | 1 | 1 (100%) |
| GoogleBooks | no author ID (search by name) | https://books.google.com/books?q=inauthor:%22Roberto%20Jorge%20Payro%CC%81%22 | 0 | 0 |
| Amazon | no author ID (search by name) | https://www.amazon.com/s?i=stripbooks&rh=p_27%3ARoberto%20Jorge%20Payro%CC%81 | 1 | 1 (100%) |