Não informado. (1968). World meetings outside United States and Canada. Technical Meetings Information Service.
Chicagoスタイル(17版)引用形式Não informado. World Meetings Outside United States and Canada. Newton Centre, Mass: Technical Meetings Information Service, 1968.
MLA(8版)引用形式Não informado. World Meetings Outside United States and Canada. Technical Meetings Information Service, 1968.
警告: この引用は必ずしも正確ではありません.