{
  "type": "book",
  "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.",
  "title": "To, co wiem na pewno",
  "subtitle": null,
  "slug": "to-co-wiem-na-pewno",
  "url": "https://www.kolczanksiazek.pl/oprah-winfrey/to-co-wiem-na-pewno",
  "json": "https://www.kolczanksiazek.pl/oprah-winfrey/to-co-wiem-na-pewno.json",
  "markdown": "https://www.kolczanksiazek.pl/oprah-winfrey/to-co-wiem-na-pewno.md",
  "authors": [
    {
      "name": "Oprah Winfrey",
      "slug": "oprah-winfrey",
      "url": "https://www.kolczanksiazek.pl/oprah-winfrey"
    }
  ],
  "language": "pl_PL",
  "original_title": "What I Know for Sure",
  "original_language": "en",
  "first_published": "2025-01-01",
  "genres": [],
  "series": [],
  "cover": "https://quivercdn.com/covers/galaktyka/oprah-winfrey/to-co-wiem-na-pewno_978-83-7579-979-8.webp?v=2026-08-17%2016%3A31%3A19",
  "description": "Wiem to na pewno: Twoja droga zaczyna się w chwili, gdy podejmujesz decyzję, by wstać, ruszyć i żyć pełnią życia. Oprah Winfrey Po tym, jak krytyk filmowy Gene Siskel zapytał ją: „ Co wiesz na pewno?”, Oprah Winfrey zaczęła pisać felietony pod tytułem What I Know For Sure („ To, co wiem na pewno”)...",
  "editions": [
    {
      "title": "To, co wiem na pewno",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/oprah-winfrey/to-co-wiem-na-pewno/9788375799798",
      "publisher": "Galaktyka",
      "publisher_series": [],
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
      "narrators": [],
      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-83-7579-979-8",
      "pages": null,
      "published": "2025-01-01",
      "language": "pl_PL",
      "cover": "https://quivercdn.com/covers/galaktyka/oprah-winfrey/to-co-wiem-na-pewno_978-83-7579-979-8.webp?v=2026-08-17%2016%3A31%3A19"
    }
  ],
  "other_languages": [
    {
      "title": "Was ich vom Leben gelernt habe",
      "language": "de_DE",
      "url": "https://www.kolczanksiazek.pl/oprah-winfrey/de/was-ich-vom-leben-gelernt-habe"
    },
    {
      "title": "Όσα γνωρίζω με σιγουριά",
      "language": "el_GR",
      "url": "https://www.kolczanksiazek.pl/oprah-winfrey/el/osa-gnorizo-me-sigouria"
    },
    {
      "title": "What I Know for Sure",
      "language": "en_GB",
      "url": "https://www.kolczanksiazek.pl/oprah-winfrey/en/what-i-know-for-sure"
    }
  ],
  "characters": [],
  "chapters": []
}