{
  "book": {
    "authors": [
      "Michael Spivak"
    ],
    "authorship": "known",
    "pages": 680,
    "publisher": "Publish or Perish, inc",
    "title": "Calculus"
  },
  "cached": true,
  "citations": {
    "apa": "Spivak, M. (2008). Calculus (4th ed.). Publish or Perish, inc.",
    "bibtex": "@book{isbn9780914098911,\n  title = {Calculus},\n  author = {{Michael Spivak}},\n  publisher = {Publish or Perish, inc},\n  year = {2008},\n  edition = {4th},\n  language = {eng},\n  isbn = {9780914098911},\n}",
    "chicago": "Spivak, Michael. Calculus. 4th ed. Publish or Perish, inc, 2008.",
    "mla": "Spivak, Michael. Calculus. 4th ed., Publish or Perish, inc, 2008.",
    "wp": "{{cite book |title=Calculus |author1=Michael Spivak |publisher=Publish or Perish, inc |year=2008 |edition=4th |language=en |isbn=9780914098911}}"
  },
  "consulted": {
    "answered": 1,
    "consulted": 1,
    "not_asked": 0,
    "not_held": 0
  },
  "found": true,
  "isbn": {
    "input": "9780914098911",
    "isbn13": "9780914098911",
    "normalized": "9780914098911",
    "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"
  ]
}
