Não informado. (1968). World meetings outside United States and Canada. Technical Meetings Information Service.
Style de citation Chicago (17e éd.)Não informado. World Meetings Outside United States and Canada. Newton Centre, Mass: Technical Meetings Information Service, 1968.
Style de citation MLA (8e éd.)Não informado. World Meetings Outside United States and Canada. Technical Meetings Information Service, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.