Não informado. (2021). Information Services & Use. North-Holland Publishing Company.
Chicagoスタイル(17版)引用形式Não informado. Information Services & Use. Amsterdam: North-Holland Publishing Company, 2021.
MLA(8版)引用形式Não informado. Information Services & Use. North-Holland Publishing Company, 2021.
警告: この引用は必ずしも正確ではありません.