Cita APA (7a ed.)

International Union of Public Transport (Bruselas). Public transport documentation and studies (1ra. ed.). s.e.

Cita Chicago Style (17a ed.)

International Union of Public Transport (Bruselas). Public Transport Documentation and Studies. 1ra. ed. Bruselas: s.e.

Cita MLA (8a ed.)

International Union of Public Transport (Bruselas). Public Transport Documentation and Studies. 1ra. ed. s.e.