{
  "type": "author",
  "site": {
    "name": "Kołczan Książek",
    "language": "pl-PL",
    "url": "https://www.kolczanksiazek.pl"
  },
  "formats": "Każda podstrona ma dwie wersje z tymi samymi danymi: JSON (adres strony + .json) i markdown (adres strony + .md). Do każdego `url` w tym dokumencie można dopisać .json albo .md.",
  "name": "Bertold Kittel",
  "slug": "bertold-kittel",
  "url": "https://www.kolczanksiazek.pl/bertold-kittel",
  "json": "https://www.kolczanksiazek.pl/bertold-kittel.json",
  "markdown": "https://www.kolczanksiazek.pl/bertold-kittel.md",
  "image": null,
  "books_count": 4,
  "languages_count": 1,
  "countries_count": 1,
  "books": [
    {
      "title": "Sutenerzy Trójmiasta 2. Ułaskawienie",
      "subtitle": null,
      "slug": "sutenerzy-trojmiasta-2-ulaskawienie",
      "url": "https://www.kolczanksiazek.pl/bertold-kittel/sutenerzy-trojmiasta-2-ulaskawienie",
      "first_published": "2026-05-11",
      "series": null
    },
    {
      "title": "Sutenerzy Trójmiasta",
      "subtitle": null,
      "slug": "sutenerzy-trojmiasta",
      "url": "https://www.kolczanksiazek.pl/bertold-kittel/sutenerzy-trojmiasta",
      "first_published": "2025-09-25",
      "series": null
    },
    {
      "title": "System. Jak mafia zarabia na śmieciach",
      "subtitle": null,
      "slug": "system-jak-mafia-zarabia-na-smieciach",
      "url": "https://www.kolczanksiazek.pl/bertold-kittel/system-jak-mafia-zarabia-na-smieciach",
      "first_published": "2013-09-25",
      "series": null
    },
    {
      "title": "Mafia po polsku",
      "subtitle": null,
      "slug": "mafia-po-polsku",
      "url": "https://www.kolczanksiazek.pl/bertold-kittel/mafia-po-polsku",
      "first_published": "2013-04-01",
      "series": null
    }
  ],
  "translations": null,
  "narrations": null
}