@book{oai:miyazaki-u.repo.nii.ac.jp:00004112,
 author = {Yanagisawa, Kazuo and 柳沢, 一男 and 柳澤, 一男},
 month = {},
 publisher = {朝日新聞社},
 title = {大分県日田穴観音古墳},
 year = {1993},
 yomi = {ヤナギサワ, カズオ}
}