APA (7th ed.) Citation

Garbutt, P. E. (1972). Underground [London, England]. London Transport.

Chicago Style (17th ed.) Citation

Garbutt, Paul E. Underground [London, England]. [London, England]: London Transport, 1972.

MLA (9th ed.) Citation

Garbutt, Paul E. Underground [London, England]. London Transport, 1972.

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