APA (7e ed.) Bronvermelding

Não informado. (1967). WORLD MEETINGS, UNITED STATES AND CANADA. Technical Meetings Information Service.

Chicago (17e ed.) Bronvermelding

Não informado. WORLD MEETINGS, UNITED STATES AND CANADA. New York: Technical Meetings Information Service, 1967.

MLA (8e ed.) Bronvermelding

Não informado. WORLD MEETINGS, UNITED STATES AND CANADA. Technical Meetings Information Service, 1967.

Let op: Deze citaties zijn niet altijd 100% accuraat.