Cita APA (7a ed.)

Richards, J. M. (1960). An introduction to modern architecture. Penguin.

Cita Chicago Style (17a ed.)

Richards, James Maude. An Introduction to Modern Architecture. Harmondsworth: Penguin, 1960.

Cita MLA (9a ed.)

Richards, James Maude. An Introduction to Modern Architecture. Penguin, 1960.