{
  "book": {
    "authors": [
      "Philip Callow"
    ],
    "authorship": "known",
    "city": "Chicago",
    "pages": 428,
    "publisher": "Ivan R Dee",
    "subtitle": "a biography",
    "title": "Chekhov, the hidden ground"
  },
  "cached": true,
  "citations": {
    "apa": "Callow, P. (1998). Chekhov, the hidden ground: a biography. Ivan R Dee.",
    "bibtex": "@book{isbn9781566631877,\n  title = {Chekhov, the hidden ground: a biography},\n  author = {{Philip Callow}},\n  publisher = {Ivan R Dee},\n  address = {Chicago},\n  year = {1998},\n  language = {eng},\n  isbn = {9781566631877},\n}",
    "chicago": "Callow, Philip. Chekhov, the Hidden Ground: A Biography. Ivan R Dee, 1998.",
    "mla": "Callow, Philip. Chekhov, the Hidden Ground: A Biography. Ivan R Dee, 1998.",
    "wp": "{{cite book |title=Chekhov, the hidden ground: a biography |author1=Philip Callow |publisher=Ivan R Dee |location=Chicago |year=1998 |language=en |isbn=9781566631877}}"
  },
  "consulted": {
    "answered": 1,
    "consulted": 1,
    "not_asked": 0,
    "not_held": 0
  },
  "found": true,
  "isbn": {
    "input": "9781566631877",
    "isbn13": "9781566631877",
    "normalized": "9781566631877",
    "valid": true
  },
  "ok": true,
  "quality": {
    "state": "partial",
    "omissions": [
      {
        "field": "issued",
        "reason": "missing_evidence"
      },
      {
        "field": "responsibility",
        "reason": "unverified_roles"
      }
    ]
  },
  "supported_styles": [
    "mla",
    "apa",
    "chicago",
    "wp",
    "bibtex"
  ]
}
