APA (7th ed.) Citation

Richards, J. M. (1940). An introduction to modern architecture. Penguin.

Chicago Style (17th ed.) Citation

Richards, J. M. An Introduction to Modern Architecture. Harmondsworth: Penguin, 1940.

MLA (8th ed.) Citation

Richards, J. M. An Introduction to Modern Architecture. Penguin, 1940.

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