<ref name="Rowling1999">{{cite book|author=J.K. Rowling|title=Harry Potter|url=https://books.google.com.tw/books?id=_fOpbNJhEk8C&q|year=%E5%93%88%E5%88%A9%E6%B3%A2%E7%89%B9+%E5%96%AC%E6%B2%BB%C2%B7%E8%A1%9B%E6%96%AF%E7%90%86&dq1999|publisher=%E5%93%88%E5%88%A9%E6%B3%A2%E7%89%B9+%E5%96%AC%E6%B2%BB%C2%B7%E8%A1%9B%E6%96%AF%E7%90%86&hl=zh-TW&sa=X&ved=0ahUKEwjX1eSzn6zgAhUPE3wKHS_9BtsQ6AEILzABDe Harmonie}}</ref>