@book{
  author = "長坂, 信夫",
  title = "臨床小児歯科学",
  year: 1990
  month: 5
  key = "Stomatognathic Diseases--in infancy & childhood",
  publisher = "南山堂",
  address = "東京",
  ISSN/ISBN = "9784525828219 [4525828218]",
}