APA (7th ed.) Citation

London Transport Board & Lewis, B. G. (1961). Green Line coaches. London Transport.

Chicago Style (17th ed.) Citation

London Transport Board and B. G. Lewis. Green Line Coaches. [London]: London Transport, 1961.

MLA (9th ed.) Citation

London Transport Board and B. G. Lewis. Green Line Coaches. London Transport, 1961.

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