APA (7e ed.) Bronvermelding

Não informado. (2022). Public Transport International. International Union of Public Transport.

Chicago (17e ed.) Bronvermelding

Não informado. Public Transport International. Bruxelles: International Union of Public Transport, 2022.

MLA (8e ed.) Bronvermelding

Não informado. Public Transport International. International Union of Public Transport, 2022.

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