{
  "isbn": "99-99999-99-9",
  "title": "AJAX",
  "authors": [
    {"first_name": "John", "last_name": "Smith"},
    {"first_name": "James", "last_name": "White"}
  ],
  "date": {
    "year": 2006,
    "month": sep,
    "day": 12
  }
}