APA (7th ed.) Citation

(1940). Builders! Speed is Vital, Minutes Saved-Lives Saved-poster. London.

Chicago Style (17th ed.) Citation

Builders! Speed Is Vital, Minutes Saved-Lives Saved-poster. London, 1940.

MLA (8th ed.) Citation

Builders! Speed Is Vital, Minutes Saved-Lives Saved-poster. London, 1940.

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