APA (7e ed.) Bronvermelding

Não informado. (1970). Rail International. International Railway Congress Association.

Chicago (17e ed.) Bronvermelding

Não informado. Rail International. Brussels: International Railway Congress Association, 1970.

MLA (8e ed.) Bronvermelding

Não informado. Rail International. International Railway Congress Association, 1970.

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