APA (7th ed.) Citation

Beck, H. C. (1945). Underground lines: [London]. London Transport.

Chicago Style (17th ed.) Citation

Beck, H. C. Underground Lines: [London]. [London]: London Transport, 1945.

MLA (9th ed.) Citation

Beck, H. C. Underground Lines: [London]. London Transport, 1945.

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