@book{
  author = "大塚, 保信",
  title = "老人福祉論 : 豊かな交流を求めて",
  year: 1990
  month: 9
  key = "老人福祉",
  publisher = "晃洋書房",
  address = "京都",
  ISSN/ISBN = "9784771004986 [4771004986]",
}