Não informado. (1984). Data base directory. Knowledge Industry Publications.
Chicagoスタイル(17版)引用形式Não informado. Data Base Directory. White Plains, NY: Knowledge Industry Publications, 1984.
MLA(8版)引用形式Não informado. Data Base Directory. Knowledge Industry Publications, 1984.
警告: この引用は必ずしも正確ではありません.