Não informado. (1984). Communications Systems Worldwide. Morgan Grampian.
Chicagoスタイル(17版)引用形式Não informado. Communications Systems Worldwide. London: Morgan Grampian, 1984.
MLA(8版)引用形式Não informado. Communications Systems Worldwide. Morgan Grampian, 1984.
警告: この引用は必ずしも正確ではありません.