APA (7th ed.) Citation

Richards, J. M. (1941). An Introduction to modern architecture. Penguin.

Chicago Style (17th ed.) Citation

Richards, J. M. An Introduction to Modern Architecture. London: Penguin, 1941.

MLA (9th ed.) Citation

Richards, J. M. An Introduction to Modern Architecture. Penguin, 1941.

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