APA (7th ed.) Citation

London Regional Transport (Agency). (1990). Underground journey planner. London Transport.

Chicago Style (17th ed.) Citation

London Regional Transport (Agency). Underground Journey Planner. London: London Transport, 1990.

MLA (9th ed.) Citation

London Regional Transport (Agency). Underground Journey Planner. London Transport, 1990.

Warning: These citations may not always be 100% accurate.