APA(7版)引用形式

Não informado. (1957). Annual Bulletin of Gas Statistics for Europe. United Nations, Economic Commission for Europe.

Chicagoスタイル(17版)引用形式

Não informado. Annual Bulletin of Gas Statistics for Europe. Geneva, Suíça: United Nations, Economic Commission for Europe, 1957.

MLA(8版)引用形式

Não informado. Annual Bulletin of Gas Statistics for Europe. United Nations, Economic Commission for Europe, 1957.

警告: この引用は必ずしも正確ではありません.