APA (7th ed.) Citation

Feynman, R. P. (1990). QED : the strange theory of light and matter / Richard P. Feynman: The strange theory of light and matter. Penguin.

Chicago Style (17th ed.) Citation

Feynman, Richard P. QED : The Strange Theory of Light and Matter / Richard P. Feynman: The Strange Theory of Light and Matter. Harmondsworth: Penguin, 1990.

MLA (9th ed.) Citation

Feynman, Richard P. QED : The Strange Theory of Light and Matter / Richard P. Feynman: The Strange Theory of Light and Matter. Penguin, 1990.

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